Kinetic analysis of the thermal decomposition of Zn(II) 2-chlorobenzoate complex with caffeine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895358" target="_blank" >RIV/00216275:25310/12:39895358 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.tca.2012.05.024" target="_blank" >http://dx.doi.org/10.1016/j.tca.2012.05.024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tca.2012.05.024" target="_blank" >10.1016/j.tca.2012.05.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Kinetic analysis of the thermal decomposition of Zn(II) 2-chlorobenzoate complex with caffeine

Popis výsledku v původním jazyce

Kinetics of the first two thermal decomposition steps of the complex [Zn(2-Clbenz)(2)(caf)(2)] (where 2-Clbenz = (C6R4Cl)(2)COO- and caf = caffeine) has been studied using differential thermogravimetry under non-isothermal conditions in air. Although thetwo studied processes partially overlap, it was found that apparent activation energy may be determined directly from the raw data using both, isoconversional and non-isoconversional methods. The original Kissinger method appears to perform better due to its robustness, however, the isoconversional methods on the other hand provide information about the onsets and endsets of the overlapping peaks. In order to complete kinetic analysis the peaks needed to be deconvoluted - the Fraser-Suzuki function wasutilized in this approach. Based on the characteristic kinetic functions z(alpha) and y(alpha) it was found that both decompositions follow first order kinetics and can be described using the Johnson-Mehl-Avrami kinetic model.

Název v anglickém jazyce

Kinetic analysis of the thermal decomposition of Zn(II) 2-chlorobenzoate complex with caffeine

Popis výsledku anglicky

Kinetics of the first two thermal decomposition steps of the complex [Zn(2-Clbenz)(2)(caf)(2)] (where 2-Clbenz = (C6R4Cl)(2)COO- and caf = caffeine) has been studied using differential thermogravimetry under non-isothermal conditions in air. Although thetwo studied processes partially overlap, it was found that apparent activation energy may be determined directly from the raw data using both, isoconversional and non-isoconversional methods. The original Kissinger method appears to perform better due to its robustness, however, the isoconversional methods on the other hand provide information about the onsets and endsets of the overlapping peaks. In order to complete kinetic analysis the peaks needed to be deconvoluted - the Fraser-Suzuki function wasutilized in this approach. Based on the characteristic kinetic functions z(alpha) and y(alpha) it was found that both decompositions follow first order kinetics and can be described using the Johnson-Mehl-Avrami kinetic model.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.20.0254" target="_blank" >EE2.3.20.0254: Výzkumný tým pro pokročilé nekrystalické materiály</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Thermochimica Acta

ISSN

0040-6031

e-ISSN

—

Svazek periodika

543

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

113-117

Kód UT WoS článku

000307419500014

EID výsledku v databázi Scopus

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