PVT properties for binary ionic liquids of 1-methyl-1-propylpiperidinium bis(trifluoromethylsulfonyl)imide with anisole or acetophenone at pressures up to 50 MPa |
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| Institution: | 1. Department of Chemical Engineering, Mangosuthu University of Technology, uMlazi, Durban, 4031, South Africa;2. Department of Chemical Engineering, Durban University of Technology, Steve Biko Campus, Durban, 4001, South Africa;1. University of Malaya Center for Ionic Liquids (UMCiL), Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Chemical Engineering Department, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia |
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| Abstract: | Densities of pure 1-methyl-1-propylpiperidinium bis(trifluoromethylsulfonyl)imide, C3mpip]NTf2], and its mixtures with anisole or acetophenone were measured with a high-pressure densimeter at temperatures from 298.15 K to 348.15 K and pressures up to 50 MPa. The Tait equation was employed to represent pressure effect on the isothermal densities. The experimental results reveal that the excess volumes of (anisole + C3mpip]NTf2]) and (acetophenone + C3mpip]NTf2]) are all negative over the entire experimental conditions. In addition to an empirical generalized equation, the density data were also correlated quantitatively with the Flory–Orwoll–Vrij (FOV) and the Schotte equations of state. |
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