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Journal articles on the topic 'Coats-Redfern method'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Mal’ko, Mihail V., Sergej V. Vasilevich, Andrey V. Mitrofanov, and Vadim E. Mizonov. "AN INNOVATE METHOD OF THERMOGRAVIMETRIC DATA ANALYSIS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, no. 3 (2021): 24–32. http://dx.doi.org/10.6060/ivkkt.20216403.6348.

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The objective of the study is to examine the Coats-Redfern approximation and to propose an innovative kinetic calculation method for the complex process of the heavy tar thermal decomposition under non-isothermal process. The thermal decomposition process was examined using the thermogravimetric analysis. There are several kinetic models proposed to analyze pyrolysis mechanism in terms of the formal reaction. In this manner, the kinetic parameters of the pyrolysis process can be evaluated based on total mass loss (thermogravimetric analysis –TGA). The TGA procedures can be conducted with isoth

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2

Guo, Zhi Hong, Pei Jie Lin, Qing Yan Xu, et al. "Kinetics of Non-Isothermal Degradation of PFA." Applied Mechanics and Materials 268-270 (December 2012): 138–42. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.138.

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Thermal stability can reflect the thermal degradation speed of polymers during the melt processing. In this paper, we used Kissinger, Flynn-Wall-Ozawa and Coats-Redfern method to study the kinetics of non-isothermal degradation of PFA. The thermal degradation activation energy obtained from the Kissinger method, Flynn-Wall-Ozawa method and Coats-Redfern method is 228.5 kJ/mol, 213.9 kJ/mol and 237.4 kJ/mol respectively. The Flynn-Wall-Ozawa method indicates the thermal degradation reaction PFA is a secondary reaction.

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3

Dhaundiyal, Alok, Suraj B. Singh, Muammel M. Hanon, and Rekha Rawat. "Determination of Kinetic Parameters for the Thermal Decomposition of Parthenium hysterophorus." Environmental and Climate Technologies 22, no. 1 (2018): 5–21. http://dx.doi.org/10.1515/rtuect-2018-0001.

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Abstract A kinetic study of pyrolysis process of Parthenium hysterophorous is carried out by using thermogravimetric analysis (TGA) equipment. The present study investigates the thermal degradation and determination of the kinetic parameters such as activation E and the frequency factor A using model-free methods given by Flynn Wall and Ozawa (FWO), Kissinger-Akahira-Sonuse (KAS) and Kissinger, and model-fitting (Coats Redfern). The results derived from thermal decomposition process demarcate decomposition of Parthenium hysterophorous among the three main stages, such as dehydration, active an

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4

Ross, Kelly, and David Godfrey. "EFFECT OF EXTRACTIVES ON THE THERMAL DECOMPOSITION OF WHEAT, TRITICALE, AND FLAX CROP RESIDUES : A KINETIC STUDY." International Journal of Biomass and Renewables 1, no. 2 (2012): 19. http://dx.doi.org/10.61762/ijbrvol1iss2art13821.

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A kinetic study was performed using the Kissinger and Coats-Redfern methods to examine the effect of extractives on thermal decomposition of three crop residues, wheat straw, triticale straw and flax shives. The extractives-free crop residues required higher temperatures for the onset of thermal decomposition than the corresponding native/unextracted samples. Activation energy (Ea) values varied according to kinetic analysis and the extractives-free samples generally showed significantly higher Ea values (65-214 kJ.mol-1) than the native/unextracted samples (58-205 kJ.mol-1). This information

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5

Yang, Dong, Wei Zhang, Ru Liang Yao, and Ben Zheng Jiang. "Thermal Degradation Characteristics and Kinetics of High Temperature Vulcanized (HTV) Silicone Rubber/POSS Hybrid." Applied Mechanics and Materials 105-107 (September 2011): 1657–61. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1657.

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A high temperature vulcanized (HTV) silicone rubber/octavinyl polyhedral oligomeric silsesquioxane (POSS) hybrid was prepared. The micromorphology of the cured hybrid was investigated by scanning electron microscopy (SEM); the thermal degradation stability of this hybrid was studied by means of thermal gravimetric analyses (TGA); the degradation kinetics of this hybrid was also studied using Doyle method and Coats-Redfern method. Results showed that aggregation of self-cross-linked octavinyl POSS appeared in the HTV silicon rubber/POSS hybrid. The incorporation of POSS into silicon rubber netw

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6

Nangarthody, Sindhu, and V. Sivasubramanian. "Kinetic and Thermodynamic Analysis of Pyrolysis of Coconut Wood Residue." Asian Journal of Chemistry 35, no. 1 (2022): 39–44. http://dx.doi.org/10.14233/ajchem.2023.24016.

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Physico-chemical properties, kinetics and thermodynamic analysis of biomass are important in designing an efficient pyrolysis process. The current study aims to investigate the physico-chemical behaviour, calorific value and kinetics of thermal decomposition of coconut wood (Cocos nucifera) at 10, 15, and 25 ºC/min using the thermogravimetric analysis (TGA) technique in nitrogen atmospheres. Kinetic parameters were estimated using the Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), Staring, Tang, Friedman and Coats-Redfern (CR) methods. Average activation energy estimated from Kissinge

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7

Altynbaeva, Dariga, Alexander Astafev, and Roman Tabakaev. "Kinetics of biomass low-temperature pyrolysis by coats–redfern method." MATEC Web of Conferences 194 (2018): 01058. http://dx.doi.org/10.1051/matecconf/201819401058.

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Energy is one of the main sources of environmental pollution. In this regard, the world scientific community seeks to reduce its negative impact on human health and nature. To do this, some of the organic raw materials, which are fuel for power plants, are gradually replaced by renewable resources, in particular - biomass. The combustion of biomass by traditional methods is accompanied by high operating costs, which leads to the conclusion that it is necessary to process it into energy-valuable products. The development of one of the most promising such directions - thermal processing - requir

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8

Wan, Haibo, and Zhen Huang. "Kinetic Analysis of Pyrolysis and Thermo-Oxidative Decomposition of Tennis String Nylon Wastes." Materials 14, no. 24 (2021): 7564. http://dx.doi.org/10.3390/ma14247564.

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Thermal degradation of nylon-6 tennis string nylon wastes in inert nitrogen and air atmospheres was investigated by means of multiple heating-rate thermogravimetric analyses. The results obtained under the heating rates of 5–20 K/min are compared in terms of degradation feature and specific temperature for two atmospheres. Using nonisothermal data, kinetic analysis was thoroughly conducted using various isoconversional model-free methods, including Starink, Madhusudanan–Krishnan–Ninan, Tang, Coats–Redfern, and Flynn–Wall–Ozawa methods. With these kinetic analysis methods, the activation energy

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9

Zhang, Pei, Zhaoyang Chen, Qiuli Zhang, Shuo Zhang, Xiaogang Ning, and Jun Zhou. "Co-pyrolysis characteristics and kinetics of low metamorphic coal and pine sawdust." RSC Advances 12, no. 34 (2022): 21725–35. http://dx.doi.org/10.1039/d2ra02461f.

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The research on the product distribution of the co-pyrolysis of coal and biomass and the use of the Coats–Redfern integral method and the Achar differential method to study the kinetic parameters and mechanism of the pyrolysis process.

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10

Wang, Xiangxi, Zhenzhong Hu, Inamullah Mian, et al. "Gasification Kinetics of Organic Solid Waste Pellets: Comparative Study Using Distributed Activation Energy Model and Coats–Redfern Method." Energies 15, no. 24 (2022): 9575. http://dx.doi.org/10.3390/en15249575.

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The gasification kinetics of pellets obtained from organic solid wastes (OWS) and raw materials were studied using the Coats–Redfern and DAEM methods. The different methods were comparatively analyzed for mutual verification, and the similar activation energies obtained by each method affirmed the accuracy of the kinetics calculation. Overall, the activation energies of the char gasification stage ranged from 200 to 265 kJ mol−1, higher than those of the devolatilization stage, which ranged from 130 to 200 kJ mol−1 for all pellets and raw materials. During the devolatilization stage, the activ

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11

Amteghy, Ali H. "Synthesis, Fluorescence and Thermal Properties of Some Benzidine Schiff Base." NeuroQuantology 20, no. 3 (2022): 135–49. http://dx.doi.org/10.14704/nq.2022.20.3.nq22053.

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A series of Schiff bases derived from benzidine and various aromatic aldehydes were prepared and characterized by spectroscopic methods. Fluorescence properties of prepared Schiff bases were studied in DMF solution. The thermo kinetic parameters. E, Δ H, Δ S and Δ G were calculated following Coats-Redfern method.

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12

W., G. Devi, K. Manihar Singh A., and Bhattacharya Manabesh. "On the error involved in the determination of activation energy of solid state reactions by using Coats-Redfern method." Journal of Indian Chemical Society Vol. 77, Jul 2000 (2000): 341–43. https://doi.org/10.5281/zenodo.5867519.

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Department of Chemsitry, T. S. Paul Manipur Women's College, Monsangei, Imphal-795 008, India  Department of Chemistry, School of Sctence, Manipur University, Canchipur, Imphal-795 003. India Department of Physics, Krishnath College, Berhampore-742 101, Murshidabad, India <em>Manuscript received 20 April 1999, accepted March 2000</em> An attempt has been made to find out precisely the error involved in the determination of activation energy by Coats and Redfern method. We also consider the case of temperature dependent frequency factor. The findings have been tcsted by evalu

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13

Kumar, Maneesh, Praveen K. Surolia, and Gayatri Prasad. "Kinetic and thermodynamic characterization of cellulosic materials using Coats-Redfern method." Biomass and Bioenergy 199 (August 2025): 107947. https://doi.org/10.1016/j.biombioe.2025.107947.

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14

Qin, Yuelin, Qingfeng Ling, Wenchao He, Jinglan Hu, and Xin Li. "Metallurgical Coke Combustion with Different Reactivity under Nonisothermal Conditions: A Kinetic Study." Materials 15, no. 3 (2022): 987. http://dx.doi.org/10.3390/ma15030987.

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The combustion characteristics and kinetics of high- and low-reactivity metallurgical cokes in an air atmosphere were studied by thermogravimetric instrument. The Coats–Redfern, FWO, and Vyazovkin integral methods were used to analyze the kinetics of the cokes, and the kinetic parameters of high- and low-reactivity metallurgical cokes were compared. The results show that the heating rate affected the comprehensive combustion index and combustion reaction temperature range of the cokes. The ignition temperature, burnout temperature, combustion characteristics, and maximum weight-loss rate of lo

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15

KURT, Adnan, and Murat KOCA. "Thermal Degradation Kinetics of a Novel Pyrazole Based Copolymer [poly(1,3-diphenyl-1H-pyrazol-5-yl methacrylate-co-styrene)]." Afyon Kocatepe University Journal of Sciences and Engineering 22, no. 3 (2022): 517–27. http://dx.doi.org/10.35414/akufemubid.1114247.

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In the present study, a new copolymer containing pyrazole substituted 1,3-diphenyl-1H-pyrazol-5-yl methacrylate (DPMA) and styrene (St) units, [poly(DPMA-co-St)], was synthesized. Thermal degradation kinetics of the copolymer system was investigated in detail with the thermogravimetric analysis (TGA) technique. An increase in the thermal stability of the copolymer from 252.02 °C to 274.89 °C was observed depending on the change in heating rate (5 °C/min – 20 °C/min). The thermal degradation activation energies of the copolymer were 149.37 kJ/mol and 140.99 kJ/mol, respectively, with the Kissin

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16

Rajendiran, T. V., and A. Jayanthi. "Activation Energy from Thermogravimetric Analysis of Certain Azopolyamides." Material Science Research India 8, no. 1 (2011): 189–95. http://dx.doi.org/10.13005/msri/080127.

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Six new azopolyamides were synthesized from 2, 21–dimethoxy 4, 41–diaminoazobenzene [Benzenamine–(3, 31– dimethoxy–4, 41-azo) bis] condensed with any one of the following diacid chlorides viz. (i) terephthaloyl chloride. (ii) isophthaloyl chloride. (iii) 4, 41–azodibenzoyl chloride (iv) 3, 31-azo dibenzoyl chloride (v) 4, 41–stilbene dicarbonyl chloride and (vi) 4, 41–oxydibenzoyl chloride using low temperature solution method. These polyamides were characterized by thermogravimetric analyses (TGA and DTA). Activation energy has been calculated using Murray and white, coats and Redfern, Doyle'

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17

Akande, H. F., and S.N. Oyawoye M. R. Nwafulugo F.U. &. Soretire L.K. Mumah. "ENERGY OPTIMIZATION IN LIMESTONE CALCINATION: KINETIC MODELING AND CHARACTERIZATION OF MFAMOSING LIMESTONE THERMAL DECOMPOSITION VIA THE COATS-REDFERN METHOD." Nigerian Journal of Renewable Energy Research 1, no. 3 (2025): 316–23. https://doi.org/10.5281/zenodo.15020424.

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<em>The thermal decomposition of limestone is a critical process in various industrial applications, including cement production and flue gas desulfurization. This study focuses on the energy optimization of limestone calcination, specifically characterizing the thermal decomposition of Mfamosing limestone using the Coats-Redfern method. Thermo Gravimetric Analysis (TGA) was employed to obtain kinetic data for different particle sizes of Mfamosing limestone. The Coats-Redfern method was utilized to model the kinetics of the thermal decomposition, allowing for the determination of activation en

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18

Matali, Sharmeela, Norazah Abd Rahman, Siti Shawalliah Idris, and Nurhafizah Yaacob. "Dynamic Model-Free and Model-Fitting Kinetic Analysis during Torrefaction of Oil Palm Frond Pellets." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 1 (2020): 253–63. http://dx.doi.org/10.9767/bcrec.15.1.6985.253-263.

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Torrefaction is a thermal conversion method extensively used for improving the properties of biomass. Usually this process is conducted within a temperature range of 200-300 °C under an inert atmosphere with residence time up to 60 minutes. This work aimed to study the kinetic of thermal degradation of oil palm frond pellet (OPFP) as solid biofuel for bioenergy production. The kinetics of OPFP during torrefaction was studied using frequently used iso-conversional model fitting (Coats-Redfern (CR)) and integral model-free (Kissinger-Akahira-Sunose (KAS)) methods in order to provide effective ap

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19

Ni, Xiaoyang, Zheng Wu, Wenlong Zhang, Kaihua Lu, Yanming Ding, and Shaohua Mao. "Energy Utilization of Building Insulation Waste Expanded Polystyrene: Pyrolysis Kinetic Estimation by a New Comprehensive Method." Polymers 12, no. 8 (2020): 1744. http://dx.doi.org/10.3390/polym12081744.

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Expanded polystyrene (EPS) has excellent thermal insulation properties and is widely applied in building energy conservation. However, these thermal insulation materials have caused numerous fires because of flammability. Pyrolysis is necessary to support combustion, and more attention should be paid to the pyrolysis characteristics of EPS. Moreover, pyrolysis is considered to be an effective method for recycling solid waste. Pyrolysis kinetics of EPS were analyzed by thermogravimetric experiments, both in nitrogen and air atmospheres. A new method was proposed to couple the Flynn–Wall–Ozawa m

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20

Hong, Chen, Yi Xing, Yan Xiao Si, et al. "Lime-Mediated Sewage Sludge and Gas Ash use as Metallurgy Sintering Ingredients." Advanced Materials Research 779-780 (September 2013): 1623–28. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.1623.

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The thermogravimetry - differential thermal analysis (TG-DTA) and theoretical analysis method of Coats-Redfern were employed to study the pyrolysis process and kinetics characteristics of mixture containing lime-mediated sewage sludge and gas ash, then sintering cup test the different proportion of mixture ball. It was found that the pyrolysis process of mixture from indoor temperature 1200°Ccould divided into 4 the weight loss stages, which brings a large number of heat and CaO, Fe2O3. Base on the results of Coats-Redfem integration method, the pyrolysis process of mixture under air atmospher

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21

Zhao, Zhen, Feng Liu, Qiang Zhang, and Lei Wang. "Thermal Analysis of Plastic Contained Decorative Materials under Different Oxygen Concentration." Advanced Materials Research 550-553 (July 2012): 2786–90. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2786.

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The combustion characteristics of decorative materials were studied by thermal analysis. The experiments were performed in three kind of oxygen concentration (7%, 14%, 21%), the heating rate were 15°C/min and 30°C/min respectively. The ignition point and maximum weight loss rated were analyzed. Based on the Coats-Redfern integral method, the results show that the combustion process were first order reaction.

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22

Maitra, S., S. Mukherjee, N. Saha, and J. Pramanik. "Non-isothermal decomposition kinetics of magnesite." Cerâmica 53, no. 327 (2007): 284–87. http://dx.doi.org/10.1590/s0366-69132007000300011.

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Kinetics of thermal decomposition of Indian magnesite was studied by thermo-gravimetric analysis under non-isothermal condition. Coats and Redfern Integral approximation method was used to determine the kinetic parameters. Using the kinetic parameters different kinetic functions were analyzed with the experimental data to ascertain the decomposition mechanism of magnesium carbonate and it was observed that the decomposition reaction followed a contracting sphere kinetic mechanism.

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23

Elmay, Yassine, Mejdi Jeguirim, Gwenaelle Trouvé, and Rachid Said. "Kinetic analysis of thermal decomposition of date palm residues using Coats–Redfern method." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 38, no. 8 (2016): 1117–24. http://dx.doi.org/10.1080/15567036.2013.821547.

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24

Tariq, Rumaisa, Abrar Inayat, Muhammad Shahbaz, et al. "Kinetic and thermodynamic evaluation of pyrolysis of jeans waste via coats-redfern method." Korean Journal of Chemical Engineering 40, no. 1 (2023): 155–61. http://dx.doi.org/10.1007/s11814-022-1248-3.

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25

Hassan, Abu, Muhammad Asif, Tariq Hussain, Rida Sajjad, Farzana Yasmin, and Mayeen UddinKhandaker. "Pyrolysis of municipal solid waste: Kinetics and thermodynamic parameters via Coats-Redfern method." Applied Chemical Engineering 7, no. 2 (2024): 1872. http://dx.doi.org/10.59429/ace.v7i2.1872.

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Renewable and sustainable energy resources are the dire need of time for environmental sustainability and to minimize the effects of global warming and climate change. The objective of this study was to investigate the thermos-kinetic parameters of municipal solid waste through pyrolysis. The sample was collected and prepared according to the American standards for test materials. Thermogravimetric analysis showed the three distinct regions, while the maximum degradation occurs in the second region within the temperature range of 230–400 ℃. A model-fitting approach using the Coats Redfern mode

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26

Ganesan, Aravind, Simon Barnabé, Younès Bareha, Simon Langlois, Olivier Rezazgui, and Cyrine Boussabbeh. "Kinetic Analysis of Construction, Renovation, and Demolition (CRD) Wood Pyrolysis Using Model-Fitting and Model-Free Methods via Thermogravimetric Analysis." Energies 18, no. 10 (2025): 2496. https://doi.org/10.3390/en18102496.

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The pyrolysis of non-recyclable construction, renovation, and demolition (CRD) wood waste is a complex thermochemical process involving devolatilization, diffusion, phase transitions, and char formation. CRD wood, a low-ash biomass containing 24–32% lignin, includes both hardwood and softwood components, making it a viable heterogeneous feedstock for bioenergy production. Thermogravimetric analysis (TGA) of CRD wood residues was conducted at heating rates of 10, 20, 30, and 40 °C/min up to 900 °C, employing model-fitting (Coats–Redfern (CR)) and model-free (Ozawa–Flynn–Wall (OFW), Kissinger–Ak

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27

Dubdub, Ibrahim, and Mohammed Al-Yaari. "Pyrolysis of Low Density Polyethylene: Kinetic Study Using TGA Data and ANN Prediction." Polymers 12, no. 4 (2020): 891. http://dx.doi.org/10.3390/polym12040891.

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Pyrolysis of waste low-density polyethylene (LDPE) is considered to be a highly efficient, promising treatment method. This work aims to investigate the kinetics of LDPE pyrolysis using three model-free methods (Friedman, Flynn-Wall-Qzawa (FWO), and Kissinger-Akahira-Sunose (KAS)), two model-fitting methods (Arrhenius and Coats-Redfern), as well as to develop, for the first time, a highly efficient artificial neural network (ANN) model to predict the kinetic parameters of LDPE pyrolysis. Thermogravimetric (TG) and derivative thermogravimetric (DTG) thermograms at 5, 10, 20 and 40 K min−1 showe

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28

Wang, Zhihong, Chengzhang Wang, and Mijun Peng. "Thermal decomposition kinetics of raw and treated olive waste." Thermal Science 23, no. 6 Part A (2019): 3501–12. http://dx.doi.org/10.2298/tsci171012078w.

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The pyrolysis characteristic of raw and ultrasound assisted enzyme hydrolysis treated (UAEH) olive waste was investigated using the thermogravimetric analysis at 5, 10, 15, and 20?C per minute in the nitrogen atmosphere. The thermal decomposition was divided into three stages in the thermograph curve, and the thermogravimetric curve showed the same decomposition trend for two samples. The temperature interval and peak temperature were different for two different samples, and moved to higher temperature with the increase in heating rate. Differential thermogravimetric and differential scanning

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29

Raza, Mohsin, Basim Abu-Jdayil, Ali H. Al-Marzouqi, and Abrar Inayat. "Kinetic and thermodynamic analyses of date palm surface fibers pyrolysis using Coats-Redfern method." Renewable Energy 183 (January 2022): 67–77. http://dx.doi.org/10.1016/j.renene.2021.10.065.

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30

Chouhan, Ashish Pratap Singh, and Suman Mukherjee. "Thermogravimetric Analysis of Pinus Wood For Kinetic Analysis by Using Coats and Redfern Method." Journal of Physics: Conference Series 1531 (May 2020): 012116. http://dx.doi.org/10.1088/1742-6596/1531/1/012116.

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31

Ebrahimi-Kahrizsangi, R., and M. H. Abbasi. "Evaluation of reliability of Coats-Redfern method for kinetic analysis of non-isothermal TGA." Transactions of Nonferrous Metals Society of China 18, no. 1 (2008): 217–21. http://dx.doi.org/10.1016/s1003-6326(08)60039-4.

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32

Naqvi, Salman Raza, Rumaisa Tariq, Zeeshan Hameed, et al. "Pyrolysis of high ash sewage sludge: Kinetics and thermodynamic analysis using Coats-Redfern method." Renewable Energy 131 (February 2019): 854–60. http://dx.doi.org/10.1016/j.renene.2018.07.094.

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33

Ouyang, Z., Y. F. Chen, S. Y. Tian, et al. "Thermodynamic and kinetics analysis of the sulfur-fixed roasting of antimony sulfide using ZnO as sulfur-fixing agent." Journal of Mining and Metallurgy, Section B: Metallurgy 54, no. 3 (2018): 411–18. http://dx.doi.org/10.2298/jmmb180510031o.

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Currently, the commercial antimony metallurgy is mainly based on pyrometallurgical processes and oxidative volatilization of Sb2S3 is an essential step. This step includes the problems of high energy consumption and low concentration of SO2 pollution. Aiming at these problems, we present a new method of sulfur-fixing roasting of antimony sulfide. This method uses ZnO as a sulfur-fixing agent, and roasting with Sb2S3 was carried out at 673 K~1073 K to produce Sb2O3 and ZnS. By calculating the thermodynamics of the reactions, we can conclude that the Gibbs Free Energy Change (?G?) of roasting re

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34

Maitra, S., N. Chakrabarty, and J. Pramanik. "Decomposition kinetics of alkaline earth carbonates by integral approximation method." Cerâmica 54, no. 331 (2008): 268–72. http://dx.doi.org/10.1590/s0366-69132008000300001.

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The decomposition kinetics of four synthetic alkaline earth metal carbonates (MgCO3, CaCO3, SrCO3 and BaCO3) was studied under non-isothermal conditions from thermo-gravimetric measurements as compared to. The integral approximation method of Coats and Redfern was used to determine the kinetic parameters for the decomposition processes. The decomposition reactions followed mostly first order kinetics and the activation energy of the decomposition reactions increased with the increase in the molecular mass of the carbonates. The change in enthalpy for the decomposition processes was also calcul

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35

Wan, Haibo, and Zhen Huang. "Pyrolysis Evaluation of Tennis String Polyurethane and Water-Borne Polyurethane Wastes through Isoconversional Kinetic Analysis." Polymers 14, no. 8 (2022): 1501. http://dx.doi.org/10.3390/polym14081501.

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A detailed kinetic analysis of pyrolysis processes of Tennis string polyurethane (TSPU) waste and waterborne polyurethane (WPU) waste was carried out in the present paper. Non-isothermal pyrolysis characterizations of two wastes were acquired through thermogravimetric determinations under the constant heating rates of 5, 10, 15 and 20 K/min. Experimental results showed that the pyrolysis processes of TSPU and WPU were mainly characteristic of three stages and two stages, respectively. Two pyrolysis performance indices, the devolatilization index (DI) and heat-resistance index (HRI), were used

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36

Kurt, Adnan, and Murat Koca. "Synthesis, Characterization and Thermal Degradation Kinetics of a New Pyrazole Derived Methacrylate Polymer, Poly(1,3-Diphenyl-1H-Pyrazol-5-Yl Methacrylate)." Acta Chimica Slovenica 69, no. 2 (2022): 466–77. http://dx.doi.org/10.17344/acsi.2022.7358.

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Since the behavior and properties of macromolecular pyrazole derived polymers differ from their small molecules, such polymers are in the class of well-defined functional polymers due to the fact that the pyrazole ring contains two π-bonds as well as two hetero atoms in its structure, and this feature makes them important in the fields of scientific and technological applications. In present study, therefore, we synthesized a new pyrazole derived methacrylate monomer, 1,3-diphenyl-1H-pyrazol-5-yl methacrylate, from the reaction of 1,3-diphenyl-5-pyrazolone with methacryloyl chloride in the pre

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37

Liu, Shu Yi, Quan Wang, and Zheng Huan Wu. "MDNs/FGNs/IFR Synergistic Flame Retardant for Epoxy Resin the Influence of Thermal Degradation Kinetics." Engineering Innovations 12 (January 3, 2025): 1–5. https://doi.org/10.4028/p-8aqyr1.

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The thermal degradation process of layered molybdenum disulfide nanosheets/flake graphite nanosheets/expanded flame retardants/epoxy resins (MDNs/FGNs/IFR/EP) was analyzed using thermogravimetric analysis. The effect of binary nanolayered molybdenum disulfide/flake graphite nanosheets as enhancing flame retardants on thermal stability was studied. The thermal degradation kinetics activation energy of MDNs/FGNs/IFR/EP was calculated using the Coats Redfern method. The mechanism function of MDNs/FGNs/IFR/EP was determined using the Phadnis method, and the thermal degradation mechanism of MDNs/FG

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V., Renganayaki* V. C. Bharath Sabarish. "SYNTHESIS, GROWTH AND CHARACTERIZATION OF Mg DOPED LAHC SINGLE CRYSTALS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 2 (2017): 117–27. https://doi.org/10.5281/zenodo.290124.

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Single crystals of Mg doped L Alanine Hydrogen chloride (Mg doped LAHC) have been synthesized. The synthesized material has been purified by repeated recrystallization process. Single crystals were grown by slow evaporation method. The spectroscopic techniques namely, Fourier Transform InfraRed (FTIR), UV-VIS-NIR were used to study the properties of the crystals. The structural and lattice parameters determination was done by X-ray diffraction. The thermal stability studies were carried out. The thermoanalytical parameters like activation energy, entropy for activation and Arrhenius pre expone

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Ali, Sulaiha, Siti Aslina Hussain, Mohd Zahirasri Mohd. Tohir, and Ahmad Ainuddin Nuruddin. "Investigation of kinetic decomposition characteristics of Malaysian wood species using Coats and Redfern (CR) method." Materials Today: Proceedings 42 (2021): 178–85. http://dx.doi.org/10.1016/j.matpr.2020.11.341.

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Al-Moftah, Ahmad Mohamed S. H., Richard Marsh, and Julian Steer. "Thermogravimetric Kinetic Analysis of Non-Recyclable Waste CO2 Gasification with Catalysts Using Coats–Redfern Method." ChemEngineering 6, no. 2 (2022): 22. http://dx.doi.org/10.3390/chemengineering6020022.

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In the present study, the effect of dolomite and olivine as catalysts on the carbon dioxide (CO2) gasification of a candidate renewable solid recovered fuel, known as Subcoal™ was determined. Thermogravimetric analysis (TGA) was used to produce the TGA curves and derivative thermogravimetry (DTG) for the gasification reaction at different loadings of the catalyst (5, 10, 15 wt.%). The XRD results showed that the crystallinity proportion in Subcoal™ powder and ash was 42% and 38%, respectively. The Arrhenius constants of the gasification reaction were estimated using the model-fitting Coats–Red

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Okur, Hüseyin, and Çiǧdem Eymir. "Dehydration Kinetics of Ulexite by Thermogravimetric Data Using the Coats-Redfern and Genetic Algorithm Method." Industrial & Engineering Chemistry Research 42, no. 15 (2003): 3642–46. http://dx.doi.org/10.1021/ie020929n.

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Ge, Shi Fu, and Pei Tao Zhao. "Effect of Thermal Conditioning on Combustion and Pollutant Emissions Characteristics of Sewage Sludge." Advanced Materials Research 726-731 (August 2013): 2030–35. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2030.

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Thermal conditioning (TC) can improve sludge mechanical dewaterability and drying performance, and produce solid fuel from sewage sludge with low-cost and harmlessness. This study investigates the influence of the TC on sludge combustion with thermogravemetric analysis of sewage sludge with/without TC. The experiments were carried out at a 150 mL/min air ambient with a heating rate of 10, 20, 30, 40, 50 °C/min. Tow integration approximation methods (Coats-Redfern and Flynn,-Wall-Ozawa) and a differential method (Kissinger method) were applied to study the kinetics. The Coats-Redfern method req

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Ali, Ghulam, and Jan Nisar. "Kinetics and Thermodynamics of the Pyrolysis of Waste Polystyrene over Natural Clay." Advances in Environmental and Engineering Research 03, no. 04 (2022): 1–40. http://dx.doi.org/10.21926/aeer.2204044.

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Due to the massive increase in polymer manufacture, there has been a remarkable increase in plastic waste. With fewer landfills being used to dump plastic waste each year, it is becoming increasingly important to use effective recycling methods for plastic waste decomposition. In the present work, waste polystyrene was degraded in the presence of natural clay (K<sub>0.02</sub>, Ca<sub>0.15</sub> [Mg<sub>0.25</sub>, Al<sub>0.69</sub>, Fe<sub>0.06</sub>], [Si<sub>2.0</sub>, Al<sub>0.6</sub>] O<sub>6.8</s

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Abbas, Ammar S., and Marwa G. Saber. "Kinetics of Thermal Pyrolysis of High-Density Polyethylene." Iraqi Journal of Chemical and Petroleum Engineering 19, no. 1 (2018): 13–19. http://dx.doi.org/10.31699/ijcpe.2018.1.2.

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Thermal pyrolysis kinetics of virgin high-density polyethylene (HDPE) was investigated. Thermal pyrolysis of HDPE was performed using a thermogravimetric analyzer in nitrogen atmosphere under non-isothermal conditions at different heating rates 4, 7, 10 °C/min. First-order decomposition reaction was assumed, and for the kinetic analysis Kissinger-Akahira-Sunose(KAS), Flynn-Wall-Ozawa(FWO) and Coats and Redfern(CR) method were used. The obtained values of average activation energy by the KAS and FWO methods were equal to137.43 and 141.52 kJ/mol respectively, these values were considered in good

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Wang, Yuan Yuan, Jia Chuan Chen, and Gui Hua Yang. "Effect of Heating Rate on the Deinking Sludge Pyrolysis Character." Applied Mechanics and Materials 670-671 (October 2014): 205–8. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.205.

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In this paper, the thermogravimetic (TG) and differential thermogravimetric (DTG) curves of deinking sludge from Huatai Group Co., Ltd were derived from tests of thermal gravimetric analyzer (TGA). Pyrolysis character and kinetics of deinking sludge were investigated using thermalanalysis. The result showed that the pyrolysis process was composed of three stages: water lose stage, organic decomposition and decomposition of residues. The dynamical model of this pyrolysis process could be expressed by three first-order parallel reaction. The kinetic parameters of pyrolysis reaction were calculat

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Ondro, Tomáš, Tomáš Húlan, and Ivan Vitázek. "Non-Isothermal Kinetic Analysis of the Dehydroxylation of Kaolinite in Dynamic Air Atmosphere." Acta Technologica Agriculturae 20, no. 2 (2017): 52–56. http://dx.doi.org/10.1515/ata-2017-0010.

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Abstract A non-isothermal kinetic analysis of kaolinite dehydroxylation was carried out using thermogravimetric analysis on powder samples with heating rates from 1 to 30 °C・min-1 in a dynamic air atmosphere. The mechanism of the reaction, values of overall activation energy and pre-exponential factor were determined from a series of thermogravimetric experiments by the Coats- Redfern method. The results show that the dehydroxylation of kaolinite is controlled by the rate of the third-order reaction (F3) with the mean values of overall activation energy (EA) 255 kJ・mol-1 and pre-exponential fa

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Nounou, Radwan Saad Allah, Ibrahim Abdelfadeel Shaban, Labeeb Ali, Mohammednoor Altarawneh, and Mahmoud Elgendi. "Kinetic and thermodynamic analysis of the PET-date seed mixture co-pyrolysis using Coats-Redfern method." Renewable Energy 237 (December 2024): 121524. http://dx.doi.org/10.1016/j.renene.2024.121524.

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Şahin, Ömer, Mustafa Özdemir, Mehmet Aslanoǧlu, and Ü. Gürbüz Beker. "Calcination Kinetics of Ammonium Pentaborate Using the Coats−Redfern and Genetic Algorithm Method by Thermal Analysis." Industrial & Engineering Chemistry Research 40, no. 6 (2001): 1465–70. http://dx.doi.org/10.1021/ie000690f.

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Agacayak, T. "Investigation of Combustion Kinetic with Coats-Redfern Method by Using Thermogravimetric Data of Different Lignite Samples." Физико-технические проблемы разработки полезных ископаемых, no. 5 (2022): 88–94. http://dx.doi.org/10.15372/ftprpi20220509.

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Agacayak, T. "Investigation of Combustion Kinetic with Coats–Redfern Method by Using Thermogravimetric Data of Different Lignite Samples." Journal of Mining Science 58, no. 5 (2022): 776–82. http://dx.doi.org/10.1134/s106273912205009x.

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