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Artykuły w czasopismach na temat „TGA-Dtg Analysis”

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Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Taghvaei-Ganjali, Saeed, Fereshteh Motiee, and Farsa Fotoohi. "Correlation between Physico-Mechanical Properties of NR-BR Blends in Tire Tread Formulation with their Thermal Behaviors." Rubber Chemistry and Technology 81, no. 2 (2008): 297–317. http://dx.doi.org/10.5254/1.3548211.

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Abstract Thermal analysis provides a successful technique for the characterization and identification of rubber compounds. In this study, TGA (thermogravimetric analysis) and DTG (TGA derivative) profiles are used to predict and define the physico-mechanical properties of natural rubber — butadiene rubber (NR / BR) blends, using their thermal behaviors. DTG curves of vulcanizate showed that the initial degradation temperature of NR is lower than BR. According to TGA-DTG profiles we have demonstrated two useful factors, ΔTmax (Tmax BR100−Tmax BRX) and peak height ratio of NR-BR blends which are

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2

Ben Haj Amara, A. "X-ray diffraction, infrared and TGA/DTG analysis of hydrated nacrite." Clay Minerals 32, no. 3 (1997): 463–70. http://dx.doi.org/10.1180/claymin.1997.032.3.08.

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AbstractAn homogenous 8.4 Å hydrate was obtained after washing intercalated KAc- nacrite. X-ray diffraction analysis based on comparison of the experimental and calculated profiles enabled the amount of water (one molecule per Si2Al2O5(OH)4) and the z coordinate along c* (6.5 Å) to be determined. The hydration state was accompanied by a decrease in the coherent domain along c* in the order nacrite > KAc-nacrite > H2O-nacrite. The IR spectrum of the hydrated nacrite showed an evolution of the structure with a shift of ν(OH) from 3702, 3649 and 3630 cm−1 to 3690, 3641 and 3620 cm−1, respec

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Tawkir, Mohammad. "Synthesis and Characterisation of Co(II) Cu(II) Zn(III) and La(II) Complexes of Standard Antidiabetic Drugs." Material Science Research India 11, no. 1 (2014): 51–61. http://dx.doi.org/10.13005/msri/110107.

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Metal complxes of Glimeperide drugs were prepared and characterized based on elemental analysis, FT-IR, Molar conductance and thermal analysis (TGA and DTG) technique. From elemental analysis data, the complexes were proposed to have general formulae (GLM)2Co2H2O, (GLM)2Cu, (GLM)2Zn,and (GLM)2La2H2O. The molar conductance data reveal that all the metal complexes are non-electrolytic, IR spectra shows that GLM are coordinated to metal ions in a neutral bidentate manner from the ESR spectra and XRD-spectra. It is found that the geometrical structures of these complexes are tetrahedral Cu(II) ,Zn

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Díez, David, Ana Urueña, Raúl Piñero, Aitor Barrio, and Tarja Tamminen. "Determination of Hemicellulose, Cellulose, and Lignin Content in Different Types of Biomasses by Thermogravimetric Analysis and Pseudocomponent Kinetic Model (TGA-PKM Method)." Processes 8, no. 9 (2020): 1048. http://dx.doi.org/10.3390/pr8091048.

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The standard method for determining the biomass composition, in terms of main lignocellulosic fraction (hemicellulose, cellulose and lignin) contents, is by chemical method; however, it is a slow and expensive methodology, which requires complex techniques and the use of multiple chemical reagents. The main objective of this article is to provide a new efficient, low-cost and fast method for the determination of the main lignocellulosic fraction contents of different types of biomasses from agricultural by-products to softwoods and hardwoods. The method is based on applying deconvolution techn

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Salil, K. Roy, and K. Sinha Pradip. "Studies of some mixed valence polyoxometalate anion containing two hetero atoms." Journal of Indian Chemical Society Vol. 78, Apr 2001 (2001): 204–5. https://doi.org/10.5281/zenodo.5872446.

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Post-Graduate Department of Chemistry, Ranchi University, Ranchi-834 008, India <em>Manuscript received 30 December 1999, revised 7 August 2000, accepted 30 November 2000</em> The studies of conditions of formation of twelve new mixed triheteropoly compounds have been carried out by pH measurements and thermometric titration. The compounds have been synthesised and characterised by DTA, TGA, DTG, X-ray diffraction and spectral analysis.

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Farivar, Farzaneh, Pei Lay Yap, Ramesh Udayashankar Karunagaran, and Dusan Losic. "Thermogravimetric Analysis (TGA) of Graphene Materials: Effect of Particle Size of Graphene, Graphene Oxide and Graphite on Thermal Parameters." C 7, no. 2 (2021): 41. http://dx.doi.org/10.3390/c7020041.

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Thermogravimetric analysis (TGA) has been recognized as a simple and reliable analytical tool for characterization of industrially manufactured graphene powders. Thermal properties of graphene are dependent on many parameters such as particle size, number of layers, defects and presence of oxygen groups to improve the reliability of this method for quality control of graphene materials, therefore it is important to explore the influence of these parameters. This paper presents a comprehensive TGA study to determine the influence of different particle size of the three key materials including g

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Ostrowska-Ligęza, Ewa, Karolina Dolatowska-Żebrowska, Magdalena Wirkowska-Wojdyła, Joanna Bryś, and Agata Górska. "Comparison of Thermal Characteristics and Fatty Acids Composition in Raw and Roasted Cocoa Beans from Peru (Criollo) and Ecuador (Forastero)." Applied Sciences 11, no. 6 (2021): 2698. http://dx.doi.org/10.3390/app11062698.

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The aim of this research was to complete the characteristics of cocoa beans and cocoa butter extracted from two different Theobroma cacao species: Criollo originated from Peru and Forastero originated from Ecuador, both in the version of raw (unroasted) and roasted beans. Before extraction, the cocoa beans were characterized by proximate analysis. The determination of fatty acids composition was carried out by gas chromatography (GC). The positional distribution of fatty acids in the sn-2 positions of triacylglycerols (TAGs) was also determined. The thermogravimetric analyses (TGA/DTG) were pe

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8

Coimbra, Ricardo N., Carla Escapa, and Marta Otero. "Comparative Thermogravimetric Assessment on the Combustion of Coal, Microalgae Biomass and Their Blend." Energies 12, no. 15 (2019): 2962. http://dx.doi.org/10.3390/en12152962.

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In this work, thermogravimetric analysis (TGA), differential thermogravimetry (DTG), and differential scanning calorimetric (DSC) were used to assess the combustion of microalgae biomass, a bituminous coal, and their blend. Furthermore, different correlations were tested for estimating the high heating value of microalgae biomass and coal, with both materials possessing similar values. TGA evidenced differences between the combustion of the studied fuels, but no relevant interaction occurred during their co-combustion, as shown by the DTG and DSC curves. These curves also indicated that the co

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9

Denardin, Elton L. G., Dimitrios Samios, Paulo R. Janissek, and Gabriel P. de Souza. "Thermal Degradation of Aged Chloroprene Rubber Studied by Thermogravimetric Analysis." Rubber Chemistry and Technology 74, no. 4 (2001): 622–29. http://dx.doi.org/10.5254/1.3544962.

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Abstract The thermal degradation of original and aged chloroprene rubber was studied using thermogravimetric analysis. Thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTG) techniques were used to detect the mass loss during the temperature elevation. By the analysis of the mass loss curves through usual kinetic methods, it was possible to evaluate the different degradation processes present in the overall degradation. The activation energies of the degradation processes were obtained using the dynamic, non-isothermal Kissinger and Osawa methods and the half-width

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10

Pintor-Ibarra, Luis Fernando, José Juan Alvarado-Flores, José Guadalupe Rutiaga-Quiñones, Jorge Víctor Alcaraz-Vera, María Liliana Ávalos-Rodríguez, and Oswaldo Moreno-Anguiano. "Chemical and Energetic Characterization of the Wood of Prosopis laevigata: Chemical and Thermogravimetric Methods." Molecules 29, no. 11 (2024): 2587. http://dx.doi.org/10.3390/molecules29112587.

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Diverse methodologies exist to determine the chemical composition, proximate analysis, and calorific value of biomass. Researchers select and apply a specific methodology according to the lignocellulosic material they study and the budgetary resources available. In this project, we determined the primary chemical constitution and proximate analysis of Prosopis laevigata (Humb. & Bonpl.) Jonhst wood using a traditional chemical method and a novel procedure based on the deconvolution of the DTG signal produced by TGA. The highest calorific value was verified using a calorimetric pump based o

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11

Amarasekara, Ananda S., Ashfaqur Razzaq, and Paul Bonham. "Synthesis and Characterization of All Renewable Resources Based Branched Polyester: Poly(2,5-furandicarboxylic acid-co-glycerol)." ISRN Polymer Science 2013 (July 21, 2013): 1–4. http://dx.doi.org/10.1155/2013/645169.

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Condensation of all renewable resources based monomers 2,5-furandicarboxylic acid and glycerol in the presence of 2 mol% Sb2O3 catalyst at 210°C gives a branched polyester resin in 70% yield. This resin was characterized by elemental analysis, 1H, 13C NMR, FT-IR, and TGA-DTG.

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12

Panteli, Maria, Dimitra Mantzara, Aikaterini Katara, Ioannis Choinopoulos, and Marinos Pitsikalis. "Synthesis and Characterization of Statistical and Block Copolymers of n-Hexyl Isocyanate and 3-(Triethoxysilyl) Propyl Isocyanate via Coordination Polymerization." Polymers 15, no. 20 (2023): 4113. http://dx.doi.org/10.3390/polym15204113.

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Well-defined statistical copolymers of n-hexyl isocyanate, HIC, and 3-(triethoxysilyl)propyl isocyanate, TESPI, were synthesized via coordination polymerization mechanism, employing a chiral half-titanocene complex as initiator. The monomer reactivity ratios of the statistical copolymers were calculated using linear graphical methods and the computer program COPOINT in the frame of the terminal model. The molecular and structural characteristics of the copolymers were also calculated. The kinetics of the thermal decomposition of the statistical copolymers was studied by Thermogravimetric Analy

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13

Kim, Young-Min, Sumin Pyo, Hanie Hakimian, Kyung-Seun Yoo, Gwang-Hoon Rhee, and Young-Kwon Park. "Kinetic Analysis for the Catalytic Pyrolysis of Polypropylene over Low Cost Mineral Catalysts." Sustainability 13, no. 23 (2021): 13386. http://dx.doi.org/10.3390/su132313386.

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A kinetic analysis of non-catalytic pyrolysis (NCP) and catalytic pyrolysis (CP) of polypropylene (PP) with different catalysts was performed using thermogravimetric analysis (TGA) and kinetic models. Three kinds of low-cost natural catalysts were used to maximize the cost-effectiveness of the process: natural zeolite (NZ), bentonite, olivine, and a mesoporous catalyst, Al-MCM-41. The decomposition temperature of PP and apparent activation energy (Ea) were obtained from the TGA results at multiple heating rates, and a model-free kinetic analysis was performed using the Flynn–Wall–Ozawa model.

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Jana, Sumit Kumar, Satarupa Pattanayak, Magar Subhash Bhausaheb, Bidhan Chandra Ruidas, and Dan Bahadur Pal. "Pyrolysis of Waste Plastic to Fuel Conversion for Utilization in Internal Combustion Engine." Chemistry & Chemical Technology 17, no. 2 (2023): 438–49. http://dx.doi.org/10.23939/chcht17.02.438.

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In the present study different plastic waste materials with various types of plastics such as low-density polyethylene and polypropylene with zinc oxide catalyst have been pyrolyzed in batch tubular reactor. Waste plastics were characterized by using TGA and DTG analysis and FTIR spectroscopy. The pyrolyzed products are analyzed by standard methods to determine various parameters.

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15

Eimontas, Justas, Nerijus Striūgas, Mohammed Ali Abdelnaby, and Samy Yousef. "Catalytic Pyrolysis Kinetic Behavior and TG-FTIR-GC–MS Analysis of Metallized Food Packaging Plastics with Different Concentrations of ZSM-5 Zeolite Catalyst." Polymers 13, no. 5 (2021): 702. http://dx.doi.org/10.3390/polym13050702.

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Recently, the pyrolysis process has been adapted as a sustainable strategy to convert metallized food packaging plastics waste (MFPW) into energy products (paraffin wax, biogas, and carbon black particles) and to recover aluminum. Usually, catalysts are used in pyrolysis treatment to refine pyrolysis products and to increase their yield. In order to study the effect of a catalyst on the formulated volatile products, this work aims to study the pyrolysis behavior of MFPW in presence of catalyst, using TG-FTIR-GC–MS system. The pyrolysis experiments were conducted with ZSM-5 Zeolite catalyst wit

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16

Wang, X. D., J. J. Xue, Y. J. Zhu, et al. "The study of combustion characteristics of corn stalks and cobs via TGA-DTG-DSC analysis." IOP Conference Series: Earth and Environmental Science 354 (October 25, 2019): 012130. http://dx.doi.org/10.1088/1755-1315/354/1/012130.

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Aniza, N., Suhaimi Hassan, M. F. M. Nor, and H. A. M. Fadhil. "Thermogravimetric Kinetic Behavior of Malaysian Poultry Processing Dewatered Sludge (PPDS) during Combustion." Applied Mechanics and Materials 695 (November 2014): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amm.695.433.

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The combustion characteristic and kinetic analysis of Malaysian poultry processing dewatered sludge (PPDS) from two different origins, namely as PPDS 1 and PPDS 2 using Thermogravimetric analysis (TGA) were examined. The non-isothermal step was practiced under oxidative atmosphere during the investigation. The temperature was ramped from 30oC to 1000oC at four different heating rates to allow the calculation of kinetic analysis parameter i.e. activation energy. Derivative thermogravimetric (DTG) curves for both samples resulted from TGA shows 3 different peaks. Calculation of apparent activati

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18

Amaliyah, Novriany, and Andi Erwin Eka Putra. "Microwave-Assisted Pyrolysis of Cashew Nut Shell." International Journal of Design & Nature and Ecodynamics 16, no. 2 (2021): 227–32. http://dx.doi.org/10.18280/ijdne.160213.

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This research examines the characteristics of microwave assisted pyrolysis products of cashew nutshell waste (CNS). The pyrolysis process of CNS conducted with microwave heating of 400 W for 60 minutes. Pyrolysis product such as bio-gas, bio-oil and bio-char were identified using proximate and ultimate analysis, scanning electron microscope (SEM), thermogravimetric analysis (TGA/DTG), gas chromatograph-mass spectrometer (GC-MS) and Fourier Transform InfraRed (FTIR) Method. There is a significant increasing in volatile matter and fixed carbon of derived bio-char and the porous structure was obs

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Teja, M. Eswar. "FABRICATION AND TESTING OF TiBA COMPOSITE POLYMER." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 04 (2024): 1–5. http://dx.doi.org/10.55041/ijsrem29938.

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The modern environment is demanding more and more creative composite materials that provide high mechanical and thermal qualities. Composites are favored over traditional materials because they improve the properties of the base material and have a broad range of applications. One of the primary benefits of utilizing composite materials over conventional materials for components is weight reduction. Composite materials can be stronger than conventional materials even though they are lighter. Chemical resistance and electrical insulation qualities are two more benefits of choosing a composite m

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Cui, Fang Ming, Xiao Yuan Zhang, and Li Min Shang. "Thermogravimetric Analysis of Biomass Pyrolysis under Different Atmospheres." Applied Mechanics and Materials 448-453 (October 2013): 1616–19. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1616.

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Thermogravimetric analysis (TGA) was employed to study the effects of two different atmospheres (nitrogen and mixed biomass gasification gas) on the pyrolysis of rice husk, corn stalk and pine wood. Kinetic parameters were calculated based on the experiment data. The results indicated that TG and DTG curves moved to higher temperature range and the characteristic temperatures ascended as the increasing of the heating rate. Moreover, the three biomass materials exhibited similar pyrolysis behaviors under the two different atmospheres, but the activation energy values of the pyrolysis under mixe

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Rivera, Maria D., Nelson J. Escobar, Alvaro Arrieta, Aura S. Merlano, and Oriana Palma Calabokis. "Sandwich Composite Panels with Thermal and Acoustic Insulation Properties for Sustainable Buildings." Environments 12, no. 3 (2025): 95. https://doi.org/10.3390/environments12030095.

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Urbanization and population growth have heightened the need for sustainable, efficient building materials that combine acoustic and thermal insulation with environmental and economic sustainability. Sandwich composite panels have gained attention as versatile solutions, offering lightweight structures, high strength, and adaptability in construction applications. This study evaluates manual, semi-automatic, and automatic production methods, selecting the automatic process for its efficiency, precision, and suitability for large-scale production. Extensive characterization techniques, including

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Trivedi, Mahendra Kumar, Neena Dixit, Parthasarathi Panda, Kalyan Kumar Sethi, and Snehasis Jana. "In-depth investigation on physicochemical and thermal properties of magnesium (II) gluconate using spectroscopic and thermoanalytical techniques." Journal of Pharmaceutical Analysis 7, no. 5 (2017): 332–37. https://doi.org/10.1016/j.jpha.2017.03.006.

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Magnesium gluconate is a classical organometallic pharmaceutical compound used for the prevention and treatment of hypomagnesemia as a source of magnesium ion. The present research described the in-depth study on solid state properties viz. physicochemical and thermal properties of magnesium gluconate using sophisticated analytical techniques like Powder X-ray diffraction (PXRD), particle size analysis (PSA), Fourier transform infrared (FT-IR) spectrometry, ultraviolet–visible (UV–Vis) spectroscopy, thermogravimetric analysis (TGA)/differential thermogravimetric analysis (DTG), and

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Taaca, Kathrina Lois M., Eleanor M. Olegario, and Magdaleno R. Vasquez. "Impregnation of silver in zeolite–chitosan composite: thermal stability and sterility study." Clay Minerals 54, no. 2 (2019): 145–51. http://dx.doi.org/10.1180/clm.2019.23.

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AbstractThe solvent-casting method was used to synthesize a silver–zeolite–chitosan (AgZ-Ch) composite from Philippine natural zeolites. X-ray diffraction, ultraviolet–visible (UV-Vis) spectroscopy, optical emission spectroscopy (OES), thermogravimetric analysis (TGA) and differential thermogravimetry (DTG) were used to investigate the different properties of the composite before and after plasma treatment. The major phase of the zeolite is Na-clinoptilolite with trace amounts of mordenite, feldspar and quartz. UV-Vis and OES analyses confirmed the presence of Ag and zeolite on the chitosan ma

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Moafi, Hadi Fallah, та Seyed Morteza Mostashari. "Flame-resistant polymeric composite fibers based on nanocoating flame retardant: thermogravimetric study and production of α-Al2O3 nanoparticles by flame combustion". Journal of Polymer Engineering 34, № 9 (2014): 803–12. http://dx.doi.org/10.1515/polyeng-2013-0176.

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Abstract In this work, we investigated the effect of aluminum chloride hexahydrate as a flame retardant coating on the flammability of cellulosic and polyester (polyethylene terephthalate, PET) fibers. The samples were characterized by several techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, vertical flammability test, limiting oxygen index (LOI), thermogravimetric analysis (TGA)and differential thermogravimetric (DTG). Aluminum chloride hexahydrate <100 nm in size has been found to form continuous and dispersed

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Manic, Nebojsa, Bojan Jankovic, Dragoslava Stojiljkovic, Vladimir Jovanovic, and Milos Radojevic. "TGA-DSC-MS analysis of pyrolysis process of various agricultural residues." Thermal Science 23, Suppl. 5 (2019): 1457–72. http://dx.doi.org/10.2298/tsci180118182m.

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Slow pyrolysis (gradual heating over a wide range of temperatures) characteristics of various biomasses (corn brakes, wheat straw, and hazelnut shell) were investigated by simultaneous thermal analysis (STA-TGA-DTG-DSC), coupled with mass spectrometry. Thermal decomposition of these samples was divided into three stages corresponding to removal of water, devolatilization, and formation of bio-char. It was found that differences in thermal behavior of the samples are due to differences in their composition. The mass spectrometry results showed that H2, CH4 , H2O, CO2 (C3H8), CO, and C2H6were ma

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Pansawati, Indah Sakina, Yustika Agustin, and Yusuf Ahda. "Kinetic and combustion characteristics of oil palm empty fruit bunch biochar using thermogravimetric analysis." Jurnal Teknosains 13, no. 2 (2024): 128. http://dx.doi.org/10.22146/teknosains.89413.

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The usage of renewable energy is a mitigation phenomenon majorly impacting the power sectors, with biomass being one of the sources directly replacing coal in various applications. This leads to the portrayal of biomass having the potential to be a carbonaceous material, namely the Empty Fruit Bunch (EFB) of oil palm. To increase the characteristics of EFB, it can be converted into carbon-based products through thermochemical processes, such as hydrothermal carbonization. Therefore, this study aimed to compare the characteristics of feedstock and biochar EFB using the TGA method. The heating r

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D’Angelo, Antonio, Luigi Vertuccio, Cristina Leonelli, Mohammad I. M. Alzeer, and Michelina Catauro. "Entrapment of Acridine Orange in Metakaolin-Based Geopolymer: A Feasibility Study." Polymers 15, no. 3 (2023): 675. http://dx.doi.org/10.3390/polym15030675.

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Few studies have explored the immobilization of organic macromolecules within the geopolymer matrix, and some have found their chemical instability in the highly alkaline geopolymerization media. The present work reports on the feasibility of encapsulating the potentially toxic acridine orange (AO) dye in a metakaolin based geopolymer while maintaining its structural integrity. The proper structural, chemical, and mechanical stabilities of the final products were ascertained using Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), ther

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Jalal, Mahir A., Einas A. Abood, Zainab J. Sweah, Hadi S. Al-Lami, Alyaa Abdulhasan Abdulkarem, and Haider Abdulelah. "Highly Branched Poly(Adipic Anhydride-Co-Mannitol Adipate): Synthesis, Characterization, and Thermal Properties." Polymers 17, no. 5 (2025): 684. https://doi.org/10.3390/polym17050684.

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In this study, modification of poly(adipic anhydride) through branching its chains was carried out via melt condensation polymerization with D-mannitol. The percentage of mannitol was varied (3, 4, 5, 10, 15, and 20 Wt.%) and the resulting copolymers were purified and characterized by FT-IR and 13C-NMR. These analyses indicated that linear chains of poly(adipic anhydride) can react with strong nucleophiles and dissociate to produce highly branched poly(adipic anhydride-co-mannitol adipate) which confirms the validity of the proposed mechanism. The copolymer’s molecular weight characteristics h

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Fahad, Tarek Ali, and Shaker A. N. AL-Jadaan. "Synthesis, Characterization and Thermal studies of Novel Organomercury Driven from Sulfa Drugs Part 1." JOURNAL OF ADVANCES IN CHEMISTRY 7, no. 2 (2011): 1338–47. http://dx.doi.org/10.24297/jac.v7i2.2363.

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Two new heterocyclic Organmercury compounds were prepared from the reaction of Sulfamethaxazole and Sulfadiazine with 4-acetaminophenol as a coupler and separated as solids with characteristic colors. these compounds were characterized by F.T.IR-spectroscopy 1H-NMR , Micro-elemental Analysis and UV-Vis spectroscopic techniques . The work involves a study of acid – base properties compounds at different pH values, the ionization and protonation constants were calculated. The thermal behavior of these two compounds were investigated on the basis of thermogravimetric (TGA) and differential thermo

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Bogoeva-Gaceva, Gordana, Luljeta Raka, and Bojan Dimzoski. "Thermal Stability of Polypropylene/Organo-Clay Nanocomposites Produced in a Single-Step Mixing Procedure." Advanced Composites Letters 17, no. 5 (2008): 096369350801700. http://dx.doi.org/10.1177/096369350801700503.

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Thermal stability of polymer nanocomposites prepared by melt mixing of polypropylene (PP) with organo-modified clay (Cloisite C93A) and maleic anhydride grafted polypropylene (PP-g-MA) used as compatibilizer, has been studied. Thermogravimetric analysis (TGA/DTG) results showed improved thermal stability of PP in the presence of organo-clay in oxygen atmosphere. Significant prolongation of oxidation induction time (measured at 200°C) for nanocomposite, in the presence of even 1% organo-modified clay has been found.

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El-Sayed, Saad A., and M. E. Mostafa. "Pyrolysis characteristics and kinetic parameters determination of biomass fuel powders by differential thermal gravimetric analysis (TGA/DTG)." Energy Conversion and Management 85 (September 2014): 165–72. http://dx.doi.org/10.1016/j.enconman.2014.05.068.

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Samaksaman, Ukrit, and Kanit Manatura. "Co-combustion Characteristics and Kinetics Behavior of Torrefied Sugarcane Bagasse and Lignite." International Journal of Renewable Energy Development 10, no. 4 (2021): 737–46. http://dx.doi.org/10.14710/ijred.2021.37249.

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The co-combustion characteristics and kinetics of torrefied sugarcane bagasse (TB), lignite (L), and their blended samples were experimentally investigated using thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG)based on the Coats-Redfern method for kinetic estimation.Their physicochemical properties were also investigated.Raw bagasse was thermally treated in a laboratory-scale torrefactor at 275 °C with a torrefaction time of 60 min under an inert nitrogen environment.Then, the torrefied bagasse was blended with Thai lignite as a co-fuel at ratios of 50:50 (TB50L50), 70;30

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ELShami, A. A., Noura Essam, and El-Shikh M. Yousry. "Improvement of hydration products for self-compacting concrete by using magnetized water." Frattura ed Integrità Strutturale 16, no. 61 (2022): 352–71. http://dx.doi.org/10.3221/igf-esis.61.24.

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Magnetized water (MW) is one of the most effective and economical ways to improve the properties of self-compacting concrete (SCC). Therefore, the aim of this study is to improve the fresh, mechanical, and microstructural properties of SCC using MW. For this purpose, a total of 12 mixes were produced with silica fume (SF) content (5% and 10% by weight of cement), and the mixing water passed through a permanent magnetic field (with a strength of 1.4 T) for 50, 100, and 150 cycles. Tests were performed for fresh properties (Slump flow, T50cm, V-funnel, and L-box), for mechanical properties (comp

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Li, Zai Yuan, Kai Yu, Yun Gao, Jie Liu, Duo Jin, and Yu Chun Zhai. "Effect of Particle Size on Hydrogen Reduction Reaction Kinetics Parameters of Cu₂O Powders." Materials Science Forum 694 (July 2011): 769–72. http://dx.doi.org/10.4028/www.scientific.net/msf.694.769.

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The 0.4mol•L-1CuSO4 liquor and 5mol•L-1NaOH liquor were prepared by CuSO4•5H2O and NaOH as raw materials. The Cu2O powders were prepared by dextrose reducer and PVP dispersant. The DTA-TG-DTG curves obtaining is by SDT 2960 Simultaneous DSC-TGA analysis apparatus. The mensuration condition that rise temperature velocity was 15°C•min-1 and reduction reaction gas was N2 and H2 admixture gas. The kinetics was analysed by DTA-TG-DTG curves. The result indicate that form of CuO was sphericity，the CuO granularity was about 100、200、1000nm. The apparent activation energy leave each other 165.24、247.65

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Noroozizadeh, Ehsan, Ahmad Reza Moosavi-Zare, Mohammad Ali Zolfigol, Abdolkarim Zare, and Mahmoud Zarei. "Friedel–Crafts alkylation of 4-hydroxycoumarin over silica-bonded 1,4-diaza-bicyclo[2.2.2] octane-sulfonic acid chloride as nanostructured heterogeneous catalyst." Canadian Journal of Chemistry 95, no. 1 (2017): 16–21. http://dx.doi.org/10.1139/cjc-2016-0258.

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A novel nanostructured heterogeneous catalyst, namely silica-bonded 1,4-diaza-bicyclo[2.2.2]octane-sulfonic acid chloride (SBDBSAC), has been synthesized and fully characterized by several techniques, including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), differential thermal gravimetric (DTG), scanning electron microscope (SEM), and energy dispersive X-ray analysis (EDX). Afterward, the nanostructured catalyst was utilized as an efficient catalyst for the synthesis of bis-coumarin derivatives by the condensation reaction of aryla

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Hashimov, R. F., F. A. Mikailzade, S. V. Trukhanov, et al. "Structure and thermal analysis of Ba0.5La0.5MnO3 polycrystalline powder." International Journal of Modern Physics B 33, no. 22 (2019): 1950244. http://dx.doi.org/10.1142/s0217979219502448.

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The structure and thermal properties of Ba[Formula: see text]La[Formula: see text]MnO3 polycrystalline powder have been investigated using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques. The structural studies have shown that Ba[Formula: see text]La[Formula: see text]MnO3 compound crystallizes in perovskite structure with Pm-3m cubic symmetry group. The lattice parameters were obtained to be a = b = c = 3.9073 Å. Mass changes have been observed from ther

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Norizan, Mohd Nurazzi, Rahmah Mohamed, and Ahmad Faiza Mohamad. "Thermal Degradation and Microhardness Analysis of Polyene with Modified Oil Resin." Advanced Materials Research 664 (February 2013): 590–95. http://dx.doi.org/10.4028/www.scientific.net/amr.664.590.

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Thermal degradation of polyene synthesized from recycle polyvinyl chloride (PVC) and hardness of polyene coated with modified oil has been studied by thermogravimetric analysis (TGA) and microhardness test. The synthesized polyene from reaction of recycle PVC were varied from 30 minutes, 1 hour, 2 hours and 4 hours and their thermal stability has been analyzed. From differential thermal gravimetric, DTG curve, polyene from two hours reaction showed the highest degradation temperature up to 445°C due to degradation of polyene sequences. Microhardness test performed by Shimadzu DUH 211/DUH-211S

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Musa, Jabiru, Ibrahim Sada, Ahmed Salisu, and Abubakar Lawal. "STUDY OF THE PYROLYSIS KINETICS AND ENERGY CONTENT OF ACID WASHED RICE HUSK SAMPLE USING ISOCONVERSIONAL METHODS." FUDMA JOURNAL OF SCIENCES 5, no. 3 (2021): 237–146. http://dx.doi.org/10.33003/fjs-2021-0503-749.

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The rice husk was characterized by proximate and ultimate analysis. The proximate analysis was determined by moisture, volatile and ash content as 15.48%, 57.28% and 15.35% respectively. Ultimate analysis was determined using the data obtained from proximate analysis to calculate carbon, hydrogen, nitrogen and oxygen percentage as 43.67%, 4.64%, 0.956% and 35.78% respectively. The rice husk pyrolysis was studied by TGA/DTG analysis in a nitrogen atmosphere at flow rate of 60mL/minute, heating from 20.00 oC to 1000.00 oC at three different heating rates: 10, 15 and 20 oC/minute. The devolatiliz

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Moosavi-Zare, Ahmad Reza, Mohammad Ali Zolfigol, Rasoul Salehi-Moratab, and Ehsan Noroozizadeh. "Synthesis of spiropyran derivatives over 1-(carboxymethyl) pyridinium iodide as nanostructured pyridinium salt under aqueous media." Canadian Journal of Chemistry 95, no. 2 (2017): 194–98. http://dx.doi.org/10.1139/cjc-2016-0374.

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In this work, acetic acid functionalized pyridinium salt, namely 1-(carboxymethyl)pyridinium iodide {[cmpy]I}, has been applied as reusable nanostructured catalyst for green, simple and efficient preparation of spiropyrans by the one-pot domino Knoevenagel–Michael–cyclization reaction of isatin derivatives or acenaphthenquinone, with malononitrile, and 1,3-dicarbonyl compounds under aqueous media. Moreover, 1H and 13C NMR, mass, CHN analysis, Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), thermal gravimetric analysis (TGA), differential thermal gravimetric

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I. R, Ejilah,, Isah, Y.M., Agboneni, O.O., and Gaji, M.M. "Investigating the Synergistic Influence of Textile Additive on Thermal Behaviour of Recycled Plastic Materials." Journal of Energy Research and Reviews 17, no. 5 (2025): 42–56. https://doi.org/10.9734/jenrr/2025/v17i5412.

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Aims: This study aimed to investigate the thermal behavior and combustibility of plastic-textile composites, utilizing elemental and thermogravimetric analyses. Study Design: An experimental design was employed, incorporating both elemental analysis and thermogravimetric analysis (TGA and DTG). Place and Duration of Study: The research was conducted in Nigeria, specifically at the Federal University of Technology, Minna, and the National Geosciences Research Laboratory, Kaduna between February to November 2022. Methodology: The procedure involved analyzing composite samples with varying ratios

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Dhaundiyal, Alok, and Suraj B. Singh. "Analysis of the non Isothermal Distributed Activation Energy Model for Biomass Pyrolysis by Fuzzy Gaussian Distribution." Rural Sustainability Research 35, no. 330 (2016): 32–41. http://dx.doi.org/10.1515/plua-2016-0005.

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Abstract The main aim of this paper is to fuzzify the kinetic parameters, which have crisp nature, in order to obtain the realistic and accurate results. In the present study, the variance, upper limit of ‘dE’ and the frequency factor are assumed to be fuzzy numbers. The Gaussian distribution is considered as the distribution function, f (E), of Distributed Activation Energy Model (DAEM). The membership and the non-membership functions are evaluated by the trapezoidal fuzzy number. Thermo-analytical data has been found experimentally with the help of TGA/DTG analysis. The approximated solution

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Dhaundiyal, Alok, and Suraj Bhan Singh. "Application of Fuzzy Rayleigh Distribution in the Nonisothermal Pyrolysis of Loose Biomass." Acta Environmentalica Universitatis Comenianae 24, no. 2 (2016): 14–22. http://dx.doi.org/10.1515/aeuc-2016-0008.

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AbstractThis paper studied the implementation of fuzzy logic on the relevant parameter of biomass pyrolysis. Frequency factor, the upper limit of ‘dE’, and the scale parameter of Rayleigh distribution are fuzzified in order to estimate the randomness in estimating the parametric values. Distribution function, f(E), of activation energies is assumed to follow the Rayleigh distribution. Thermo-analytical data has been found experimentally with the help of TGA/DTG analysis. The approximated solution of distributed activation energy model (DAEM) is obtained by using asymptotic approach.

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Li, Zai Yuan, Yu Chun Zhai, and Myongil Pang. "Effect of Particle Size on Oxidation Reaction Kinetics Parameter of Cu₂O Powders." Advanced Materials Research 284-286 (July 2011): 726–29. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.726.

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The 0.4mol•L-1CuSO4liquor and 5mol•L-1NaOH liquor were prepared by CuSO4·5H2O and NaOH as raw materials. The Cu2O powders were prepared by dextrose reducer and PVP dispersant. The Cu2O oxidation reaction DTA-TG-DTG curves were obtained by SDT 2960 simultaneous DSC-TGA analysis apparatus. The mensuration condition were that rise temperature velocity 15°C·min-1and deoxidize gas air. The Cu2O oxidation reaction kinetics was calculated by DTA-TG-DTG curves data. The results indicate that the cuprous oxide powders shape were spherical, their particle’ sizes were 100,200,1000nm. Their apparent activ

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Giosanu, Daniela, Gabriel Ghiță, and Mihaela Ileana Oprea. "THE INFLUENCE OF SALINITY LEVEL ON THE THERMOGRAVIMETRIC RESPONSE OF BLACK BEAUTY ZUCCHINI." CURRENT TRENDS IN NATURAL SCIENCES 13, no. 26 (2024): 106–10. https://doi.org/10.47068/ctns.2024.v13i26.012.

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Thermogravimetric analysis (TGA) is a fundamental laboratory instrument applied for investigation of the material properties in various fields such as pharmaceutical, environmental, food and petrochemical applications. The differential thermal analysis (DTA) is common thermal analysis method in which an analyte and an inert reference are heating at a certain heating rate while any temperature change is recorded. In this method, changes in the weight of a specimen are measured while its temperature is increased. Moisture and volatile contents of a sample can be measured by TGA. In our research,

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Teles, Rogério de Mesquita, and Victor Elias Mouchrek Filho. "Thermal Analysis of the Essential Oil of Aniba rosaeodora Ducke by TGA and DSC." Research, Society and Development 11, no. 3 (2022): e3411326085. http://dx.doi.org/10.33448/rsd-v11i3.26085.

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Thermal analysis comprises a group of techniques to measure a physical property of a sample subjected to controlled temperature programming, including thermogravimetry (TGA), derivative thermogravimetry (DTG) and differential scanning calorimetry (DSC). The species Aniba duckei Kostermans, synonymous with Aniba rosaeodora Ducke, occurs in the Amazon and is also known as rosewood. Essential oils are complex oily aromatic liquids obtained by extraction from highly volatile aromatic plant materials as secondary metabolites. This research aimed to chemically and thermally characterize the essentia

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Zhao, Xuebing, Evert van der Heide, Ting Zhang, and Dehua Liu. "Delignification of sugarcane bagasse with alkali and peracetic acid and characterization of the pulp." BioResources 5, no. 3 (2010): 1565–80. http://dx.doi.org/10.15376/biores.5.3.1565-1580.

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Sugarcane bagasse was delignified with alkali and peracetic acid in a two-stage process to obtain pulps with high yield and low kappa number. The experimental results indicated that alkali pretreatment prior to peracetic acid (PAA) delignification could significantly reduce PAA loading by partially removing lignin and swelling the fibers. An optimum condition for the two-stage delignification was obtained for pulping of sugarcane bagasse. The pulps were further characterized by chemical composition analysis, strength property tests, Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffrac

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Siqueira, Felippe Fabrício dos Santos, Renato Lemos Cosse, Fernando Augusto de Noronha Castro Pinto, Paulo Henrique Mareze, Caio Frederico e. Silva, and Lívio César Cunha Nunes. "Characterization of Buriti (Mauritia flexuosa) Foam for Thermal Insulation and Sound Absorption Applications in Buildings." Buildings 11, no. 7 (2021): 292. http://dx.doi.org/10.3390/buildings11070292.

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Exploring new construction materials with low environmental impact leads to innovation in buildings and also to the expansion of environmental sustainability in the construction industry. In this perspective, the thermal insulation and the sound absorption performances of Buriti (Mauritia flexuosa) foam were analyzed for potential application in buildings. This material is of plant origin, it is natural, renewable, abundant, and has a low environmental impact. In this research, characterizations were made by scanning electron microscopy (SEM), apparent density, thermogravimetry (TGA and DTG),

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Yakubu, Azeh, and Mohammed Aliyu-Paiko. "Preparation and characterization of amino acid-modified nanoclay." Dutse Journal of Pure and Applied Sciences 10, no. 3a (2024): 261–70. http://dx.doi.org/10.4314/dujopas.v10i3a.24.

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Clays are low-cost, naturally occurring nanoparticles of inorganic origin, which could be isolated through careful experimental techniques. Functional intercalation of nano clay particles is aimed at attaching new functionalities for a broader application. Nanoclay was isolated and subsequently, activated using H3PO4 to increase the surface porosity and then, modified using phenylalanine/aspartic acid. The modified product was characterized using Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), X-ray fluorescence (XRF), and thermogravimetry analysis (TGA/DTG

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Khattak, Osama Ali, and Qian Zhang. "Catalytic Gasification of Petroleum Coke with K₂CO₃: Impact of Catalyst-Carbon Contact and the Role of the Boudouard Reaction at 950°C." European Journal of Applied Science, Engineering and Technology 3, no. 3 (2025): 44–50. https://doi.org/10.59324/ejaset.2025.3(3).05.

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The research analyzes the petroleum coke (petcoke) gasification catalysis process that includes potassium carbonate (K₂CO₃) as a catalyst while examining both catalyst interaction effects with carbon and the effect of the Boudouard reaction at high temperatures. The isothermal gasification examination under a CO₂ atmosphere at 950 °C was conducted using Thermogravimetric analysis (TGA) combined with derivative thermogravimetry (DTG). The gasification of pure petroleum coke (0% K₂CO₃) demonstrated very low reactivity given its inherent low gasification rate when unaccompanied by a catalyst but

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Khattak, Osama Ali, and Qian Zhang. "Catalytic Gasification of Petroleum Coke with K₂CO₃: Impact of Catalyst-Carbon Contact and the Role of the Boudouard Reaction at 950°C." European Journal of Applied Science, Engineering and Technology 3, no. 3 (2025): 44–50. https://doi.org/10.59324/ejaset.2025.3(3).05.

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The research analyzes the petroleum coke (petcoke) gasification catalysis process that includes potassium carbonate (K₂CO₃) as a catalyst while examining both catalyst interaction effects with carbon and the effect of the Boudouard reaction at high temperatures. The isothermal gasification examination under a CO₂ atmosphere at 950 °C was conducted using Thermogravimetric analysis (TGA) combined with derivative thermogravimetry (DTG). The gasification of pure petroleum coke (0% K₂CO₃) demonstrated very low reactivity given its inherent low gasification rate when unaccompanied by a catalyst

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