Title: Absorption of methylbenzene in 1-butyl-3-methylimidazolium ionic liquids

Authors: Zidan Chen; Lei Yu; Dandan Zhang; Kun Yang; Erhong Duan

Addresses: School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China ' School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China ' School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China ' School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China ' School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China

Abstract: The liquid-liquid phase equilibrium of the binary systems, 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]) + methylbenzene, were investigated at temperatures ranging from 294 K to 355 K. The solubility of methylbenzene was greater in [Bmim][PF6] than in [Bmim][BF4]. The effects of multiple parameters, such as temperature, gas flow rate and concentration of methylbenzene, were systematically investigated. The removal of methylbenzene in [Bmim][PF6] is up to 83% at 293.15 K, a gas flow rate of 50 mL/min and a gas concentration of 395 mg/m³. The absorption and desorption of methylbenzene in [Bmim][PF6] were reversible.

Keywords: methylbenzene; 1-butyl-3-methylimidazolium; ionic liquids.

DOI: 10.1504/IJMPT.2017.087057

International Journal of Materials and Product Technology, 2017 Vol.55 No.4, pp.368 - 380

Received: 04 Jul 2016
Accepted: 12 Dec 2016
Published online: 05 Oct 2017 *

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