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Dissertations / Theses on the topic 'DSC and kinetics of thermal decomposition'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Neres, Renata Aparecida. "Caracterização térmica de amostras de esponja sintética dupla face e palha de aço." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-23012015-100142/.

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Este trabalho tem por objetivo a caracterização comparativa do comportamento de degradação e/ou decomposição térmica da esponja sintética dupla face, base poliuretana (parte amarela e parte verde), e da palha de aço, a partir das técnicas termoanalíticas. As esponjas sintéticas para limpeza doméstica, em substituição à palha de aço, apesar da vantagem econômica, podem apresentar restrições de descartes para o meio ambiente ou expor o usuário a riscos de contaminação. Amostras de esponja sintética dupla face (verde e amarela) e de palha de aço foram caracterizadas por análise térmica (TG/DTG, D

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2

Koreeda, Tamy. "Caracterização termoanalítica e estudo de cura de compósito de resina epóxi e mica com propriedades elétricas isolantes aplicado em máquinas hidrogeradoras." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-25042011-112216/.

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Atualmente, a participação da energia elétrica na matriz energética mundial é um assunto em evidência. O estudo do compósito isolante da barra estatórica, um dos componentes principais da máquina hidrogeradora, permite a obtenção de informações físico-químicas relevantes ao aperfeiçoamento do sistema, e também de estudos de comportamento térmico quando este é exposto à alta temperatura, por diferentes intervalos de tempo submetidos a estresses mecânicos, elétricos e/ou químicos. O sistema em estudo é o MICALASTIC®, desenvolvido pela empresa Siemens em 1960. Neste trabalho, as propriedades térm

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3

Gundogar, Sati Asli. "Thermal Characterization And Kinetics Of Crude Oils By Tga And Dsc Methods." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611502/index.pdf.

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In recent years, the application of thermal analysis to study the combustion and pyrolysis behavior of fossil fuels has gained a wide acceptance because of its significance for industry and economy. In this thesis, the thermal and kinetic analysis of different origin crude oil samples are performed by two well-known thermal analysis techniques: Differential Scanning Calorimetry (DSC) and Thermogravimetry (TG/DTG). The investigation of combustion and pyrolysis behaviors, kinetic analysis of oil samples and the determination of heating rate effect are the main objectives of this study. Six diffe

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4

Brien, Kimberly A. "Bismuth aryloxide reactivity kinetics of thermal decomposition and resulting organic oxidation products /." [Fort Worth, Tex.] : Texas Christian University, 2010. http://etd.tcu.edu/etdfiles/available/etd-07232010-131742/unrestricted/Brien.pdf.

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5

Chai, Ming. "Thermal Decomposition of Methyl Esters in Biodiesel Fuel: Kinetics, Mechanisms and Products." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342544227.

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6

Topa, Ece Hatice. "Thermal Characterization And Kinetics Of Diesel, Methanol Route Biodiesel, Canola Oil And Diesel-biodiesel Blends At Different Blending Rates By Tga And Dsc." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612460/index.pdf.

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Application of thermogravimetric analysis to the renewable energy sources is a novel study and it has been becoming attractive by the researchers in recent years. In this thesis, thermal and kinetic properties of biodiesel as new energy source, diesel and canola oil have been analyzed by using very popular thermogravimetric analysis methods which are<br>Differential Scanning Calorimetry (DSC) and Thermogravimetry (TGA/DTG). The main aim of the study is to observe the combustion and pyrolysis behaviour of methanol route biodiesel and diesel blends at different blending rates. Additionally, comb

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7

Haligva, Cef. "Natural gas recovery from hydrates in a silica sand matrix." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2791.

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This thesis studies methane hydrate crystal formation and decomposition at 1.0, 4.0 and 7.0°C in a new apparatus. Hydrate was formed in the interstitial space of a variable volume bed of silica sand particles with an average diameter equal to 329μm (150 to 630μm range). The initial pressure inside the reactor was 8.0MPa for all the formation experiments. Three bed sizes were employed in order to observe the effects of the silica sand bed size on the rate of methane consumption (formation) and release (decomposition). The temperature at various locations inside the silica sand bed was measured

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8

Al-Sousi, Ghareeb N. "Studies on the thermal decomposition behaviour, kinetics and electrical conductivity of the non-isothermal decomposition of pyridine mono carboxylic acids and some of their transition metal complexes." Thesis, Aston University, 2000. http://publications.aston.ac.uk/9623/.

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The thesis is divided into four chapters. They are: introduction, experimental, results and discussion about the free ligands and results and discussion about the complexes. The First Chapter, the introductory chapter, is a general introduction to the study of solid state reactions. The Second Chapter is devoted to the materials and experimental methods that have been used for carrying out the experiments. The Third Chapter is concerned with the characterisations of free ligands (Picolinic acid, nicotinic acid, and isonicotinic acid) by using elemental analysis, IR spectra, X-ray diffraction,

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9

McSwiney, Michael L. "The thermal decomposition of calcium copper acetate hexahydrate : a study of the overall pathway and the kinetics and mechanism of the dehydration /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487948440825499.

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10

Li, Fan. "Development of Techniques to Produce Nickel Coated Composite Materials as well as Hollow Nickel Fibres and Kinetic Study of the Process Involved." Doctoral thesis, Stockholm : Materialvetenskap, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4478.

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11

Venturin, Agustina. "Calcination d’oxalates mixtes U-Ce : Evolution des caractéristiques des poudres et cinétique de décomposition." Thesis, Saint-Etienne, EMSE, 2015. http://www.theses.fr/2015EMSE0776.

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Le recyclage du combustible nucléaire passe par la production de poudres d’oxydes mixtes (U,Pu)O₂. Un des principaux procédés utilisés pour obtenir ce type de poudre comporte une étape de calcination d’oxalates mixtes qui se décomposent en oxyde. Le contrôle des propriétés physico-chimiques de la poudre au cours du traitement thermique des oxalates (étape précédant la mise en forme des pastilles combustibles) requiert une attention particulière, car celles-ci auront une conséquence directe sur l’aptitude à la compaction et au frittage.Dans ce contexte, ces travaux traitent de l’évolution des c

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12

Henrique, Mariana Alves. "Estudo cinético da decomposição térmica de nanocristais de celulose de caroço de manga, eucalipto e celofane." Universidade Federal de Uberlândia, 2014. https://repositorio.ufu.br/handle/123456789/17414.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The use of cellulose nanocrystals (CN) as a reinforcing agent for polymeric matrices has attracted considerable attention because the cellulose nanocrystal-based nanocomposites typically exhibit thermal, mechanical and superior barrier properties compared to the pure polymer or conventional composites and additionally provide environmental benefits. In order to use these to the CN as a reinforcing agent polymer matrix, the thermal stability of these crystals is a key factor in that they can be used as effective reinforcement mate

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13

Colombiano, Jérémy. "Approche multi-échelle pour la caractérisation de la réaction au feu sur un matériau bois. Développement d'une méthodologie pour l'ingénierie de la sécurité incendie. Validation of a Pyrolysis Model of Wood Thermal Decomposition under Cone Calorimeter." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2020. http://www.theses.fr/2020ESMA0017.

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De plus en plus, les études de sécurité incendie reposent sur l’ingénierie de la sécurité incendie. Il s’agit notamment à l’aide de codes de calcul, de réaliser des simulations numériques visant à définir les règles de sécurité à appliquer. Ainsi, des nombreuses études ont permis d’améliorer les codes de calcul et de définir les bases et guides techniques à respecter pour la réalisation de ces études. Toutefois, si cela est vrai pour le domaine de la résistance au feu, de l’évacuation ou du désenfumage, ce n’est pas encore le cas dans le domaine de la réaction au feu. Cette dernière représente

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14

Mendez, Andreas Sebastian Loureiro. "Estudo de estabilidade do antibiótico meropenem." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/28512.

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A estabilidade de medicamentos constitui um tema atual e de grande importância no meio científico. Tem sido constantemente abordada em estudos direcionados à avaliação da qualidade das preparações farmacêuticas. O meropenem, um antibiótico carbapenêmico de amplo espectro de ação, é utilizado como um importante recurso terapêutico para o tratamento de infecções graves. Por ser um agente antimicrobiano ativo e eficaz, de uso clínico em muitos países, tornase necessária a pesquisa mais aprofundada de sua estabilidade, propiciando um maior entendimento dos aspectos que podem influenciar na sua man

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15

de, Armas Oramas Daibel. "Síntesis de macrolactonas cíclicas." Doctoral thesis, Universitat Ramon Llull, 2016. http://hdl.handle.net/10803/358872.

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S’estudia i es millora l’aplicació de la síntesi d’Story per a la obtenció de macrolactones cícliques, específicament la 16-hexadecanolida a partir dels peròxids de ciclohexanona. El rendiment global en macrolides és de l’ordre del 64% a partir de la ciclohexanona inicial. S’aplica el mètode de cinètica no paramètrica – NPK – a la descomposició tèrmica del diperòxid de diciclohexilidè i del triperòxid de triciclohexilidè. Per a ambdues substàncies, s’obtenen valors del voltant de 150 kJ.mol-1 per a l’energia d’activació i s’identifica el model de Šesták-Berggren (SB) com el més probable per

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16

Battin-Leclerc, Frédérique. "Réactions du 1,4-dioxanne gazeux en présence d'oxygène ou de chlore." Vandoeuvre-les-Nancy, INPL, 1991. http://docnum.univ-lorraine.fr/public/INPL_T_1991_BATTIN_LECLERC_F.pdf.

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Ce mémoire décrit des travaux sur la pyrolyse et les réactions avec l'oxygène ou avec le chlore du 1,4-dioxanne gazeux. La pyrolyse du dioxanne a été étudiée en réacteur statique, à 510 et 550°C pour des pressions inferieures à 20 torr et des temps de séjour compris entre 1 et 10 min. Les principaux produits formés sont Co, H2, C2H4, HCHO. Un mécanisme radicalaire en chaines permet d'expliquer ces résultats expérimentaux. Une étude de l'oxydation de mélanges équimoléculaires dioxanne-Co2 en réacteur statique à des températures comprises entre 200 et 400°C et à des pressions su atmosphériques,

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17

Dakkoune, Amine. "Méthodes pour l'analyse et la prévention des risques d'emballement thermique Zero-order versus intrinsic kinetics for the determination of the time to maximum rate under adiabatic conditions (TMR_ad): application to the decomposition of hydrogen peroxide Risk analysis of French chemical industry Fault detection in the green chemical process : application to an exothermic reaction Analysis of thermal runaway events in French chemical industry Early detection and diagnosis of thermal runaway reactions using model-based approaches in batch reactors." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR30.

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L’histoire des événements accidentels dans les industries chimiques montre que leurs conséquences sont souvent graves sur les plans humain, environnemental et économique. Cette thèse vise à proposer une approche de détection et de diagnostic des défauts dans les procédés chimiques afin de prévenir ces événements accidentels. La démarche commence par une étude préalable qui sert à identifier les causes majeures responsables des événements industriels chimiques en se basant sur le retour d’expérience (REX). En France, selon la base de données ARIA, 25% des évènements sont dus à l’emballement the

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18

Her-Huah, Hwang, and 黃河樺. "Thermal Decomposition Kinetics of Cumene Hydroperoxide." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/10510052824422081490.

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碩士<br>國立雲林科技大學<br>環境與安全工程技術研究所<br>86<br>The Chemical process industry has developed rapidly and new technologies have been employed. This development led to a higher demand of control and automatisation. However, the hazard potential of chemicals has at same time resulted in a rapid growth. One of the major hazards with which the chemical industry concern the unintended thermal explosion. It is desirable to know the starting temperature increased, kinetic information is also to be concerned on the accumulation of reactor components during the intended reaction and on the violence of the d

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19

Tang, Li-Yung, and 唐力原. "Kinetics of Thermal Decomposition of Scarp Tires." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/57721580667881755368.

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20

Liao, Guo-Ting, and 廖國廷. "Thermal Decomposition Kinetics of Polyimide Polymer for Non-isothermal Conditions." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/vx389n.

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碩士<br>大同大學<br>化學工程學系(所)<br>95<br>Studies of non-isothermal decomposition of a new diamine monomer led to a series of novel polyimide polymer (a)-(f) when reacted with six dianhydrides were measured by thermogravimetric analysis (TGA) at a heating rate of 20℃/min in nitrogen and air atmospheres. Three single heating-rate integral methods by Coats-Redfern, Horowitz-Metzger and Van Krevelen that were analysed using the non-isothermal data with different expressions of solid state reactions, i.e., g(a) would be used to estimate the activation energy (E), pre-exponential factor (A), and order of re

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21

Hsieh, Ang-Zheng, and 謝昂政. "Studies on Thermal Decomposition Reaction Kinetics of Blocked Isocyanate and Polyurethane Prepolymer." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/28627674901586859725.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>105<br>A series of blocked isocyanate and polyurethane prepolymers, based on 3,5-dimethylpyrazole and using Sodium Bisulfite as blocked agent were prepared, Blocked-isophorone diisocyanate and polyurethane prepolymer including polyethylene glycol were synthesized and characterized by Fourier transform infrared spectroscopy , respectively. The deblocked temperature of the blocked isocyanate and prepolymer was investigated using thermo-gravimetric analysis. Using differential scanning calorimetry analysis and Kissinger Equation and Crane Equation , the therm

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22

Kuo, Chia-Hao, and 郭迦豪. "study on the hydroxyapatite thermal decomposition reaction and reaction kinetics by dilatometer." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/45598619037636210805.

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碩士<br>國立臺灣大學<br>地質科學研究所<br>103<br>Hydroxyapatite (HA) is a natural mineral apatite comprising hydroxyl functional groups in its structure, and is widely used as a bone replacement material because of its substantial bioactivity and biocompatibility. A well-controlled thermal processing procedure is essential to manufacture high-strength HA bioceramics. However, the procedure of the processing involves not only sintering but also thermal decomposition which could lead to the degradation of bioceramics properties. In the process of HA decomposition, as the temperature increasing, there are two r

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23

Wu, Shang-Ting, and 吳尚庭. "Study on the Microstructure Evolution and the Kinetics during Thermal Decomposition of Kyanite." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/41331190352262535645.

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碩士<br>國立臺灣大學<br>地質科學研究所<br>100<br>Many studies have discussed the thermal decomposition of kyanite; such interest is due both to its importance in the geosciences and in regard to the ceramic process. However, there are no detailed crystallographic studies on the decomposition of kyanite and, therefore, no decisive clues regarding the decomposition reaction mechanism. In this study, a detailed analysis of the microstructure evolution during the decomposition reaction, and two kinetics model: Master Kinetics Curve and Avrami Equation Method have been employed to determine the underlying mechani

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24

(8782151), Joshua Trevett Dean. "The Kinetics of Thermal Decomposition and Hot-Stage Microscopy of Selected Energetic Cocrystals." Thesis, 2020.

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<p>The thermal decomposition of four energetic cocrystals composed of 4-amino-3,5-dinitropyrazole (ADNP)/diaminofurazan (DAF), 2,4,6-trinitrotoluene (TNT)/ 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL20), 1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane (HMX)/CL20, and 1-methyl-3,5-dinitro-1,2,4-triazole (MDNT)/CL20 were studied using simultaneous differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and hot-stage microscopy. The kinetic parameters of their thermal decomposition reaction were determined using the Kissinger and Ozawa kinetic analysis methods.

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25

Lin, Shu-Hong, and 林書弘. "Methods and Applications for the Study of the Thermal Decomposition Kinetics of Evaporite Minerals." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/15622267948398022124.

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碩士<br>臺灣大學<br>地質科學研究所<br>95<br>ABSTRACT 　　Kinetic research of minerals has been a very important area in the research of geology. In this research, three kinetic methods ─ Master Curve Model (MCM), Ozawa method and Avrami Equation method ─ have been used to analyze and predict the thermal decomposition reactions of five evaporite minerals. 　　The research consists of three parts: First is to prepare the five high-purity synthetic evaporite minerals powders, including gypsum, calcite, chalcanthite, nitratine and hydromagnesite, and to verify their phases and purities by XRD. Second is to conduct

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26

"Ab initio molecular dynamics studies on thermal decomposition of Azomethane and fluxionality of IF₇, IOF₆⁻ and Te₇⁻." 2001. http://library.cuhk.edu.hk/record=b5890706.

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Hon Wan Chee Nicole Wendy.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2001.<br>Includes bibliographical references (leaves 85-87).<br>Abstracts in English and Chinese.<br>THESIS COMMITTEE --- p.ii<br>ABSTRACT (English version) --- p.iii<br>ABSTRACT (Chinese version) --- p.v<br>ACKNOWLEDGEMENTS --- p.vii<br>TABLE OF CONTENTS --- p.viii<br>LIST OF FIGURES --- p.x<br>LIST OF TABLES --- p.xiii<br>Chapter CHAPTER 1. --- General Introduction<br>Chapter Section 1.1 --- Introduction --- p.1<br>Chapter Section 1.2 --- Electronic Structure Calculation --- p.2<br>Chapter Section 1.3 -

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Hsu, Kai-Chung, and 許愷中. "The Study for Kinetics Analysis, Growth Mechanism, and Thermal Decomposition of the Synthesized CIGS Nanocrystals by One-Pot Solvothermal Method." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/f3r5m5.

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博士<br>國立臺北科技大學<br>工程學院工程科技博士班<br>106<br>Recently, due to the lack of resources, the technology of the conversion of solar energy into electrical energy had been developing rapidly. I-III-VI2 chalcopyrite semiconductors, such as Cu(InxGa1-x)Se2 (CIGS), has been intensely attracted wide attention in the thin film solar cell because of its beneficial physicochemical properties. For preparing CIGS light-absorbing layer by using a non-vacuum process, the CIGS solar cell photoelectric conversion efficiency can be affected significantly by the properties of the synthesized chalcopyrite CIGS nanocryst

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