SCI和EI收录∣中国化工学会会刊

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

• CATALYSIS, KINETICS AND REACTORS • Previous Articles     Next Articles

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

LIANG Rui, YANG Meirong, XUAN Xiaopeng   

  1. 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)

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

梁蕊, 杨美荣, 轩小鹏   

  1. School of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang 453007, China
  • 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)

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

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