Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid

doi:10.1007/s40242-014-4092-0

高等学校化学研究 ›› 2014, Vol. 30 ›› Issue (6): 1028-1031.doi: 10.1007/s40242-014-4092-0

Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid

SHAO Xianzhao, JI Xiaohui, MIN Suotian, LIU Junhai, WANG Wei

School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, P. R. China

收稿日期:2014-03-18 修回日期:2014-06-18 出版日期:2014-12-01 发布日期:2014-07-07
通讯作者: SHAO Xianzhao E-mail:xianzhaoshao@snut.edu.cn
基金资助:
Supported by the Research Fund for the Doctoral Program of Shaanxi University of Technology, China[No.SLGQD13(2)-2].

Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid

SHAO Xianzhao, JI Xiaohui, MIN Suotian, LIU Junhai, WANG Wei

School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, P. R. China

Received:2014-03-18 Revised:2014-06-18 Online:2014-12-01 Published:2014-07-07
Contact: SHAO Xianzhao E-mail:xianzhaoshao@snut.edu.cn
Supported by:
Supported by the Research Fund for the Doctoral Program of Shaanxi University of Technology, China[No.SLGQD13(2)-2].

摘要/Abstract

摘要：

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.

关键词: Organophosphinic acid, Thermogravimetric analysis, Thermal degradation, Kinetics

Abstract:

Key words: Organophosphinic acid, Thermogravimetric analysis, Thermal degradation, Kinetics

SHAO Xianzhao, JI Xiaohui, MIN Suotian, LIU Junhai, WANG Wei. Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid[J]. 高等学校化学研究, 2014, 30(6): 1028-1031.

SHAO Xianzhao, JI Xiaohui, MIN Suotian, LIU Junhai, WANG Wei. Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid[J]. Chemical Research in Chinese Universities, 2014, 30(6): 1028-1031.

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Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid

Thermal Kinetics and Decomposition Mechanism of Methylphenylphosphinic Acid and Diphenylphosphinic Acid

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