Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-04-05

Journal: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

Included Journals: EI、SCIE

Volume: 56

Issue: 13

Page Number: 3733-3739

ISSN: 0888-5885

Abstract: We investigated the solubilization effect of a supercritical carbon dioxide microemulsion based on LS-mn (LS-36, LS-45, and LS-54) surfactants for 1-butyl-3-methyl-imidazolium tetrafluoroborate ([Bmim][BF4]) as well as the influencing factors by analyzing the cloud point pressure (CPP) curves, which served as a function Of dissolved IL concentration. Results show that increased water content (W-0) could enhance [Bmim][BF4] dissolution. Under the same conditions, microemulsion systems consisting of LS-54, LS-45, and LS-36 have the gradually decreased the dissolving capacity for [Bmim][BF4]. However, variation of the surfactant concentration has little influence on dissolving [Bmim][BF4]. In addition, introducing appropriate amounts of ethanol could, decrease the CPP of the system, which did not bring significant enhancement oh [Bmim][BF4] dissolution. Molecular dynamics (MD) simulation was implemented to give an insight about the microstructure and prove the formation of the microemulsion: