Limited thermal stability of imidazolium and pyrrolidinium ionic liquids

Ionic liquids: Applications and future trends in bioreactor technology

“…Nonetheless, recent literature shows that IL degradation may occur in the presence of water at temperatures above 50°C, leading to the formation of hydrogen fluoride (Jacquemin et al, 2006). In this regard, Del Sesto et al (2009) Epoxidation of 1,2-dihydronaphthalene Stability Sanfilippo et al (2004) will avoid the potential generation of contaminated streams with unknown pollutants.…”

Isoconversional kinetic analysis applied to five phosphonium cation-based ionic liquids

“…An appropriate estimation of this property is a key factor in many engineering applications, including lubrication [17]. Despite the fact that a significant number of works have been focused on the study of thermal degradation of ILs [18][19][20][21][22][23][24][25], only a few of them have used phosphonium based ILs [13,15,26]. In addition, thermal stability is often misleadingly reported to extend up to temperatures of more than 400 ºC.…”

“…In addition, thermal stability is often misleadingly reported to extend up to temperatures of more than 400 ºC. This issue occurs if high heating rates (>10 K/min) are used in the temperature ramped thermogravimetric analysis (TGA) studies, overestimating the thermal stability of the analysed samples [22][23][24][25]. Due to the fact that most applications require long-term thermal stability, more reliable data is needed in this field.…”

A model to predict maximum tolerable temperatures of metal-oxide-supported 1- n -butyl-3-methylimidazolium based ionic liquids

“…Among these application areas, in catalysis, they offer new opportunities for immobilization of homogenous type catalysts on metal-oxides (Selvam et al, 2012) as in supported ionic liquid phase (SILP) catalyst (Kashid et al, 2011;Riisager et al, 2003;Werner et al, 2009) or they can be utilized as a selective layer over the supported metal catalysts to offer enhanced selectivity as in solid catalysts with ionic liquid layer (SCILL) (Kernchen et al, 2007;Knapp et al, 2009). One limiting factor for these applications is that ILs tend to lose their structural integrity through thermal decomposition (Del Sesto et al, 2009), leaching out (Maton et al, 2013) or evaporation (Seeberger et al, 2009;Sobota et al, 2010;Steinrück et al, 2011) under application conditions. Thermal stability of ILs has been investigated extensively (Cao and Mu, 2014;Maton et al, 2013).…”