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

作　　者：梁蕊 杨美荣 轩小鹏 

机构地区：[1]School of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang 453007, China

出　　处：《Chinese Journal of Chemical Engineering》2010年第5期736-741,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （20703014）; the Outstanding Youth Foundation of HenanProvince （074100510005）

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 °C, 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.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 °C, 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 

分 类 号：O614.121[理学—无机化学] TQ46[理学—化学]