Thermal kinetics and decomposition mechanism of methylphenylphosphinic acid and diphenylphosphinic acid View Full Text


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Article Info

DATE

2014-11-12

AUTHORS

Xianzhao Shao, Xiaohui Ji, Suotian Min, Junhai Liu, Wei Wang

ABSTRACT

Thermal degradation and degradation kinetics of methylphenylphosphinic acid(MPPA) and diphenylphosphinic acid(DPPA) were investigated via thermogravimetric analysis(TGA) technique under non-isothermal conditions. The activation energies of the decomposition process for the two compounds were calculated through the Friedman and Kissinger-Akahira-Sunose(KAS) methods. The thermal decomposition mechanism was investigated by the Criado method based on a set of TGA data obtained at different heating rates. It was shown that the activation energies calculated from the decomposition reaction by different methods were consistent with each other. The results show that the probable model for the degradation of MPPA and DPPA agreed with the two-dimensional(D2) and three-dimensional(D4) diffusion models, respectively. Moreover, the thermodynamic functions(ΔH≠, ΔS≠, ΔG≠) of the two decomposition reactions were also calculated. More... »

PAGES

1028-1031

References to SciGraph publications

  • 2005-11. Dependence of the preexponential factor on temperature in JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • 2003-05. Specificity of decomposition of solids in non-isothermal conditions in JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • 2014-01-09. Thermal kinetics and decomposition mechanism of 1-amino-1,2,3-triazolium nitrate in CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
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    http://scigraph.springernature.com/pub.10.1007/s40242-014-4092-0

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    http://dx.doi.org/10.1007/s40242-014-4092-0

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