Modeling of Supported Ionic Liquid Catalysts Systems—From Idea to Applications

Abstract

The modeling of chemical reactions studied in small scale, often carried out in Academia, is very important since it gives more information about the system and better possibilities to scale-up the processes in the future. Supported ionic liquid catalysts (SILCAs) have been studied in a number of different processes. However, the modeling of these processes have been studied only in a few cases. In this paper the sample cases are reviewed. These processes include hydrogenation of unsaturated aldehydes as well as isomerization of terpenes, αand β-pinene oxides.

Novel and Effective Strategy of Multifunctional Titanium Incorporated Mesoporous Material Supported Ionic Liquid Mediated Reusable Hantzsch Reaction

“…Hence, the development of novel and efficient heterogeneous ionic liquid catalysts are in great demand. Recently, a large number of studies on the immobilization of homogenous ILs on diverse solid support materials have been reported . The inherent advantage of heterogeneous catalysis are the easily recovering and recycling catalysts, allowing low ILs loading in the transformations .…”

Selective isomerization of α-pinene oxide totrans-carveol by task-specific ionic liquids: mechanistic insightsviaphysicochemical studies

“…25–27 The isomerization of APO and the commercialization of value-added products were achieved by the use of [NB4MPy][BF 4 ] ( N -butyl-4-methylpyridinium tetrafluoroborate) and [ N (3-OH-Pr)Py][NTf 2 ] ( N -(3-hydroxypropyl)pyridinium bis(trifluoromethylsulfonyl)imide) IL supported catalysts with maximum 20 and 21% selectivity of TCV, respectively. 28,29 The previous literature suggested that acidic groups, like –SO 3 H, –PO 3 H, phosphotungstic acid, and –COOH, and metals like Zn, Ag, Fe, Co, and Ti give TCV, whereas Lewis acids like ZnCl 2 , ZnBr 2 , FeCl 3 , and AlCl 3 give CA. 29–34 It is well known in literature, solvents play an important role in isomerization reactions like the polar aprotic solvents DMA (dimethylacetamide) and DMF (dimethylformamide) highly prefer TCV, whereas the non-polar solvent toluene prefers CA.…”

“…28,29 The previous literature suggested that acidic groups, like -SO 3 H, -PO 3 H, phosphotungstic acid, and -COOH, and metals like Zn, Ag, Fe, Co, and Ti give TCV, whereas Lewis acids like ZnCl 2 , ZnBr 2 , FeCl 3 , and AlCl 3 give CA. [29][30][31][32][33][34] It is well known in literature, solvents play an important role in isomerization reactions like the polar aprotic solvents DMA (dimethylacetamide) and DMF (dimethylformamide) highly prefer TCV, whereas the non-polar solvent toluene prefers CA. [30][31][32] These solvents are difficult to evaporate because they have high boiling points.…”