CO2 Capture Using Silica and Molecular Sieve Impregnated with [hmim][Tf2N]

Abstract

Abstract-Solid

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

“…These results evidenced that the porous materials surface was covered with IL. Yet, pores were probably filled, as already reported (Aquino et al., 2015; Arellano et al., 2016; Nkinahamira et al., 2017; Safiah et al., 2014). For SIL samples a small reduction was observed.…”

“…This behavior is associated with ILs high viscosity difficulting mass transfer. When ILs are immobilized in a solid support an increase of gas-liquid contact area is reached, improving kinetic to supported materials as previously reported (Aboudi and Vafaeezadeh, 2015; Moya et al., 2016; Safiah et al., 2014; Yang and Wang, 2015). The same behavior was evidenced for 1-Butyl-methylimidazolium acetate encapsulated in a solid material.…”

“…Yet, ILs are more versatile and less harmful to the environment than conventional organic solvents (Almantariotis et al., 2017; Anthony et al., 2002; Bara et al., 2009; Hanamertani et al., 2018, 2017; Hasib-ur-Rahman et al., 2010). ILs also present disadvantages such as high cost and viscosity, and low mass transfer in sorption process when compared to usual solvents (Safiah et al., 2014). In order to solve these problems, sorbent (e.g., amines, ionic liquids) immobilization in porous supports is an interesting alternative in CO 2 adsorption processes.…”

Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture

“…Fluorinated anions (such as [Tf 2 N] -) present high CO 2 affinity 25,26 . In spite of this, ionic liquids present disadvantages as high viscosity limiting mass transfer 27 . In order to overcome limitations related to ILs high viscosity, as poor CO 2 dynamics separation, ILs impregnation in solid materials appears as a good platform 28 .…”

Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters

“…88,91 Due to their tuneability and excellent physicochemical properties, ILs have found several applications in the eld of biomass processing, carbon dioxide and sulfur dioxide capturing, electrical energy storage, organic and inorganic synthesis, extraction of compounds from water, polymerization, drug delivery, extraction of collagen, bone ller, and lubricants, to name a few. [95][96][97][98] In general, ILs are designed by combining bulky organic cations such as imidazolium, pyridinium, piperidinium, pyrazolium, phosphonium, and ammonium with various organic or inorganic anions. The selection of ion pairs plays a major role in the thermo-physical properties as well as the solubility and miscibility of ILs in various organic and inorganic solvents.…”