Thermal Stability and Decomposition Kinetics of 1,3-Dimethyladamantane

2014 ◽  
Vol 28 (10) ◽  
pp. 6210-6220 ◽  
Author(s):  
Xiaomei Qin ◽  
Lei Yue ◽  
Jianzhou Wu ◽  
Yongsheng Guo ◽  
Li Xu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Decomposition Kinetics ◽  
Kinetics Of

scholarly journals Thermal Stability and Decomposition Kinetics of 1-Alkyl-2,3-Dimethylimidazolium Nitrate Ionic Liquids: TGA and DFT Study

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2560
Author(s):  
Jianwen Meng ◽  
Yong Pan ◽  
Fan Yang ◽  
Yanjun Wang ◽  
Zhongyu Zheng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Density Functional Theory ◽  
Ionic Liquids ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Nitrogen Atmosphere ◽  
Decomposition Kinetics ◽  
Heating Rates ◽  
Functional Theory ◽  
Kinetics Of

The thermal stability and decomposition kinetics analysis of 1-alkyl-2,3-dimethylimidazole nitrate ionic liquids with different alkyl chains (ethyl, butyl, hexyl, octyl and decyl) were investigated by using isothermal and nonisothermal thermogravimetric analysis combined with thermoanalytical kinetics calculations (Kissinger, Friedman and Flynn-Wall-Ozawa) and density functional theory (DFT) calculations. Isothermal experiments were performed in a nitrogen atmosphere at 240, 250, 260 and 270 °C. In addition, the nonisothermal experiments were carried out in nitrogen and air atmospheres from 30 to 600 °C with heating rates of 5, 10, 15, 20 and 25 °C/min. The results of two heating modes, three activation energy calculations and density functional theory calculations consistently showed that the thermal stability of 1-alkyl-2,3-dimethylimidazolium nitrate ionic liquids decreases with the increasing length of the alkyl chain of the substituent on the cation, and then the thermal hazard increases. This study could provide some guidance for the safety design and use of imidazolium nitrate ionic liquids for engineering.

The thermal stability and non-isothermal decomposition kinetics of a zinc ferrite precursor

1993 ◽  
Vol 228 ◽  
pp. 249-259 ◽  
Author(s):  
Oana Carp ◽  
E. Segal ◽  
Lummiţa Patron ◽  
Ruxandra Birjega ◽  
C. Craiu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Zinc Ferrite ◽  
Decomposition Kinetics ◽  
Isothermal Decomposition ◽  
Kinetics Of

Thermal stability and decomposition kinetics of NdNiO3-δ at 1 bar of O2

2021 ◽  
pp. 102663
Author(s):  
A.A. Bassou ◽  
P.J. Machado ◽  
M.M. Gomes ◽  
B. Manjunath ◽  
R. Vilarinho ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Decomposition Kinetics ◽  
Kinetics Of

scholarly journals Thermal Decomposition Kinetics of Ni(II) Chelates of Substituted Chalcones

2004 ◽  
Vol 1 (2) ◽  
pp. 105-109 ◽  
Author(s):  
K. G. Mallikarjun
Keyword(s):  
Thermal Stability ◽  
Thermal Decomposition ◽  
Kinetic Parameters ◽  
Approximation Method ◽  
Mathematical Analysis ◽  
Integral Method ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Stability Order ◽  
Kinetics Of

The thermal decomposition of Ni(II) complexes of 3-(phenyl)-1-(2’-hydroxy-naphthyl)-2-propen-1-one (PHPO), 3-(4-chlorophenyl)-1-(2’-hydroxy-naphthyl)-2-propen-1-one(CPHPO), 3-(4-methoxyphenyl)-1-(2’-hydroxynapthyl)-2-propen-1-one (MPHPO), 3-(3,4-dimethoxyphenyl)-1-(2’-hydroxynaphthyl)-2-propen-1-one(DMPHPO) was studied by thermogravimetry. Mathematical analysis of the data has allowed us to determine various parameters using Freeman-Carroll equation, the integral method using the coats-Redfern equation and the approximation method using the Horowitz-Metzger equation. The trend of the kinetic parameters was found to be different from that of the thermal stability order. The low values of Z suggest the slow nature of the reaction.

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