Ionic liquid silver salt complexes for propene/propane separation

被引：33

作者：

Agel, Friederike ^{[1
]}

Pitsch, Fee ^{[2
]}

Krull, Florian Felix ^{[2
]}

Schulz, Peter ^{[1
]}

Wessling, Matthias ^{[2
]}

Melin, Thomas ^{[2
]}

Wasserscheid, Peter ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, D-91058 Erlangen, Germany

[2] Rhein Westfal TH Aachen, D-52056 Aachen, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 02期

关键词：

DIFFUSION MEASUREMENTS; COORDINATION COMPOUNDS; UNSATURATED-COMPOUNDS; FIELD GRADIENT; MEMBRANES; OLEFIN; SOLUBILITY; ABSORPTION; TRANSPORT;

D O I：

10.1039/c0cp01104e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Properties of the room-temperature liquid complex salt [Ag(propene)(x)][Tf(2)N] have been studied to probe its suitability for acting as active separation layer in immobilised liquid membrane (ILM) concepts for propane/propene separation. The pressure/temperature range of complex formation has been determined and the thermal properties of Ag[Tf(2)N] and [Ag(propene)(x)][Tf(2)N] have been studied by DSC (differential scanning calorimetry) and TGA (thermogravimetric analysis) measurements. Pressure dependent measurements of solubility and diffusivity showed that the observed membrane selectivity is dominated by the solubility selectivity. The self-diffusion coefficient of propene is always smaller compared to propane as propene is temporarily bound to the silver ion in the [Ag(propene)(x)][Tf(2)N] ionic liquid.

引用

页码：725 / 731

页数：7

共 39 条

[1] Transport properties in ionic liquids and ionic liquid mixtures: The challenges of NMR pulsed field gradient diffusion measurements [J].