%J IOP Conference Series: Materials Science and Engineering
%L scholars9473
%O cited By 5; Conference of 5th International Conference on Process Engineering and Advanced Materials, ICPEAM 2018 ; Conference Date: 13 August 2018 Through 14 August 2018; Conference Code:143521
%R 10.1088/1757-899X/458/1/012072
%N 1
%D 2018
%X In this study, the kinetics of thermal degradation of three ionic liquids (ILs) were investigated using non-isothermal thermogravimetric analysis to investigate the thermal stability of ILs with various anion. Di(4-sulfonic acid) dibutyltriethylene diammonium di(hydrogen sulfate, (DABCODBSHSO 4  2 ), di(4-sulfonic acid) dibutyltriethylene diammonium di(trifluoromethanesulfonate) (DABCODBSCF 3 SO 3  2 ) and di(4-sulfonic acid) dibutyltriethylene diammonium di(chloride) (DABCODBSCl 2 ) were subjected to thermogravimetric analysis (TGA) in the temperature range of 50-800°C at four heating rates of 10, 15, 20 and 25°C/min using nitrogen at a flow rate of 20 L/min as purge gas. The average activation energies (E a ) calculated using Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) and Starink methods are 163.49, 173.33 and 162.58 kJ/mol for DAB CODB SHSO 4  2 , 119.59, 130.41 and 119.07 kJ/mol for DABCODBSCF 3 SO 3  2 , and 199.72, 210.50 and 198.63 kJ/mol for DABCODBSCl 2 , respectively. The results presented through all kinetic methods are in close agreement with each other and showed a decreasing thermal stability trend of DABCODBSCl 2 > DABCODBSHSO 4  2 > DABCODBSCF 3 SO 3  2 . The results also showed that intermediates were formed for DABCODBSCF 3 SO 3  2 and DABCODBSHSO 4  2 until achieved total decomposition, while there was no intermediate formed for the pyrolysis kinetic of DABCODBSCl 2 . This study shows the effect of nature of anion towards the thermal stability and decomposition mechanism of ILs. © Published under licence by IOP Publishing Ltd.
%K Activation energy; Chlorine compounds; Decomposition; Ionic liquids; Kinetics; Negative ions; Polymer blends; Process engineering; Sulfur compounds; Thermodynamic stability, Activation energies (Ea); Decomposition mechanism; Dicationic ionic liquids; Flynn-Wall-Ozawa; Ionic liquid (ils); Pyrolysis kinetics; Temperature range; Trifluoromethanesulfonate, Thermogravimetric analysis
%A A.N. Masri
%A M.I. Abdul Mutalib
%A W.Z.N. Yahya
%A N.F. Aminuddin
%A J.-M. Leveque
%I Institute of Physics Publishing
%V 458
%T Thermokinetics of SO 3 H-functionalized dicationic ionic liquids: Effect of anions