Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide

›› 2010, Vol. 18 ›› Issue (5): 736-741.

Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide

梁蕊, 杨美荣, 轩小鹏

School of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang 453007, China

收稿日期:2010-04-13 修回日期:2010-07-07 出版日期:2010-10-28 发布日期:2010-10-28
通讯作者: LIANG Rui,E-mail:yhb.lr@126.com
基金资助:
Supported by the National Natural Science Foundation of China (20703014);the Outstanding Youth Foundation of HenanProvince (074100510005)

Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide

LIANG Rui, YANG Meirong, XUAN Xiaopeng

School of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang 453007, China

Received:2010-04-13 Revised:2010-07-07 Online:2010-10-28 Published:2010-10-28
Supported by:
Supported by the National Natural Science Foundation of China (20703014);the Outstanding Youth Foundation of HenanProvince (074100510005)

摘要/Abstract

摘要： Thermal stability and thermal decomposition kinetics of 1-butyl-3-methylimidazolium dicyanamide ([bmin⁺][N(CN)]₂^-) were investigated using both isothermal and non-isothermal thermogravimetric analyses (TGA) under high pure nitrogen as carrier gas. The long-term thermogravimetric studies revealed that the highest temperature used should be 110℃, at which ([bmin⁺][N(CN)]₂^-) lost less than 10% by mass in 10 hours. The non-isothermal activation energy values determined using Friedman and ASTM methods were (150±13) and (147±2) kJ·mol^-1 , respectively. Multivariate non-linear-regression methods showed that expanded Fn and CnB models were the best fit models with highest correlation coefficient of 0.9994, and the apparent activation energies were consistent with iso-conversional methods.

关键词: ionic liquids, long-term thermal stability, kinetics of thermal decomposition, iso-conversional method

Abstract: Thermal stability and thermal decomposition kinetics of 1-butyl-3-methylimidazolium dicyanamide ([bmin⁺][N(CN)]₂^-) were investigated using both isothermal and non-isothermal thermogravimetric analyses (TGA) under high pure nitrogen as carrier gas. The long-term thermogravimetric studies revealed that the highest temperature used should be 110℃, at which ([bmin⁺][N(CN)]₂^-) lost less than 10% by mass in 10 hours. The non-isothermal activation energy values determined using Friedman and ASTM methods were (150±13) and (147±2) kJ·mol^-1 , respectively. Multivariate non-linear-regression methods showed that expanded Fn and CnB models were the best fit models with highest correlation coefficient of 0.9994, and the apparent activation energies were consistent with iso-conversional methods.

Key words: ionic liquids, long-term thermal stability, kinetics of thermal decomposition, iso-conversional method

梁蕊, 杨美荣, 轩小鹏. Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide[J]. , 2010, 18(5): 736-741.

LIANG Rui, YANG Meirong, XUAN Xiaopeng. Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide[J]. , 2010, 18(5): 736-741.

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Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide

Thermal Stability and Thermal Decomposition Kinetics of 1-Butyl-3-methylimidazolium Dicyanamide

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