Study on synthesis and thermodynamic properties of 1-(1-pyridinium-1-yl)pentane-(1-methylpiperidinium) bi bis(trifluoromethanesulfonyl)imide
WANG Jun
WANG Man-man
YANG Xu-zhao
ZOU Wen-yuan
CHEN Xiang
SONG Hao
Abstract：Asymmetrical dicationic ionic liquid 1-(1-pyridinium-1-yl)pentane-(1-methylpiperidinium)bi [bis(trifluoromethanesulfonyl)imide]([PyC5 Pi][NTf2 ]2 )was prepared through molecular design theo-ry,and its structure was characterized with IR and 1 H NMR.The thermal stability,thermal decomposition kinetic parameters and thermal decomposition mechanism model function of the ionic liquid were studied by using non-isothermal thermogravimetric analysis method,equal-transition ratio method and multivariate non-linear-regression method.The results showed that the thermal stability of the[PyC5 Pi][NTf2 ]2 was better.According to equal-transition ratio method,the average activation energy and average pre-exponen-tial factor of[PyC5 Pi][NTf2 ]2 were 160.10 kJ/mol and 9.17 respectively.Multivariate non-linear-regres-sion method indicated that the ionic liquid was n-tier autocatalytic reaction(Cn B),n =1.592 6,Kcat =5.602 7,corresponding to the thermal decomposition mechanism model function f(α)=(1 -α)1.592 6 (1 +5.602 7α),E =169.71 kJ·mol -1 ,lg A =9.59,respectively.The results were consistent with that of equal-transition ratio method .
Keywords：asymmetrical dicationic ionic liquidthermal stabilitythermal decomposition kinetic parameter
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 12-16 )