Ultra-low temperature water–gas shift reaction catalyzed by homogeneous Ru-complexes in a membrane reactor – membrane development and proof of concept. Issue 4 (7th January 2021)

• Record Type: Journal Article
• Authors: Logemann, Morten; Wolf, Patrick; Loipersböck, Jürgen; Schrade, Alexander; Wessling, Matthias; Haumann, Marco
• Is Part Of: Catalysis science & technology. Volume 11:Issue 4(2021)
• Page Start: 1558
• Page End: 1570
• Publication Date: 2021-01-07
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/d0cy02111c
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Supported ionic liquid-phase (SILP) catalyzed water–gas shift reaction with in situ product removal is presented. A facilitated transport membrane coated onto the smooth outside of the SiC monolith allowed preferential removal of CO2 compared to H2 . Abstract : A monolithic membrane reactor combining the supported ionic liquid-phase (SILP) catalyzed ultra-low temperature water–gas shift reaction (WGSR) with in situ product removal is presented. The SILP catalyst consists of the transition metal complex [Ru(CO)3 Cl2 ]2 homogeneously dissolved in 1-butyl-2, 3-dimethylimidazolium chloride [C4 C1 C1 Im]Cl and supported on alumina pellets. These Ru-SILP pellets are deposited inside the channels of a silicon carbide monolith. The resulting monolithic catalyst is very active and stable in the WGSR in the temperature range between 120 and 160 °C, thereby making full use of the high equilibrium conversion at these conditions. A facilitated transport membrane was coated onto the smooth outside of the SiC monolith to allow preferential removal of CO2 compared to H2 . The proof of this concept has been shown under industrially relevant conditions using a biogas feed. These results demonstrate, for the first time, the combination of homogeneous SILP catalyzed WGSR with enhanced in situ removal of one of the products (here: CO2 ) via facilitated transport membrane separation.