Jump to main content
Jump to site search

Issue 40, 2016
Previous Article Next Article

Liquid silver tris(perfluoroethyl)trifluorophosphate salts as new media for propene/propane separation

Author affiliations

Abstract

A series of silver tris(perfluoroethyl)trifluorophosphate (Ag[FAP]) complexes with various ligands (acetonitrile ACN, chloroacetonitrile Cl-ACN, acrylonitrile acryl-CN, pyridine py, ethylenediamine en and propene C3H6) have been synthesized starting from Ag[NO3] and K[FAP] using three different routes. Physicochemical properties as well as crystal structures ([Ag(ACN)2/4][FAP], [Ag(py)2][FAP]) were determined and the suitability of such Ag salts for propene/propane separation processes was investigated. The investigated silver complexes exhibit either low melting points or form liquid complexes when contacted with gaseous propene at 30 °C. This makes them promising separation materials for both liquid membranes and absorber fluids due to their high silver content and significant propene capacity. Single (iGSC) and mixed (NMR) gas solubilities as well as diffusion coefficients (PFG-NMR) of propene and propane were determined to predict the theoretical selectivity of solubility, membrane selectivity, capacity and transport properties of the silver salts according to the solution diffusion model. A strong influence of the number and type of ligands on chemical complexation, physicochemical properties and separation performance has been observed.

Graphical abstract: Liquid silver tris(perfluoroethyl)trifluorophosphate salts as new media for propene/propane separation

Back to tab navigation

Supplementary files

Article information


Submitted
15 Aug 2016
Accepted
26 Sep 2016
First published
26 Sep 2016

Phys. Chem. Chem. Phys., 2016,18, 28242-28253
Article type
Paper

Liquid silver tris(perfluoroethyl)trifluorophosphate salts as new media for propene/propane separation

D. Pliquett, P. S. Schulz, F. W. Heinemann, A. Bause and P. Wasserscheid, Phys. Chem. Chem. Phys., 2016, 18, 28242
DOI: 10.1039/C6CP05653A

Social activity

Search articles by author

Spotlight

Advertisements