Stability of an Ultra-Low-Temperature Water–Gas Shift Reaction SILP Catalyst

Title data

Fischer, Ferdinand ; Thiessen, Johannes ; Korth, Wolfgang ; Jess, Andreas:
Stability of an Ultra-Low-Temperature Water–Gas Shift Reaction SILP Catalyst.
In: Catalysts. Vol. 15 (2025) Issue 6 . - 602.
ISSN 2073-4344
DOI: https://doi.org/10.3390/catal15060602

Official URL:

Abstract in another language

For PEM fuel cell operation, high-purity hydrogen gas containing only trace amounts of carbon monoxide is a prerequisite. The water–gas shift reaction (WGSR) is an industrially applied mature operation mode to convert CO with H2O into CO2 (making it easy to separate, if necessary) and H2. Since the WGS reaction is an exothermic equilibrium reaction, low temperatures (below 200 °C) lead to full CO conversion. Thus, highly active ultra-low-temperature WGSR catalysts have to be applied. A homogeneous Ru SILP (supported ionic liquid phase) catalyst based on the precursor complex Ru(CO)3Cl22 has been identified to operate at such low temperature levels. However, in a hydrogen rich atmosphere, transition metal complexes are prone to form nanoparticles (NPs) when dissolved in ionic liquids (ILs). In this article, the behavior of an anionic SILP WGSR catalyst, i.e., Ru(CO)3Cl3− dissolved in BMMIMCl, in an H2-rich CO environment is described. The data reveal that during the WGSR, Ru nanoparticles form in the catalyst when very low CO concentrations are reached. The Ru NPs formation has been confirmed by transmission electron microscopy imaging and X-ray diffraction (XRD).

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Chemical Engineering Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess Research Institutions > Research Units > Zentrum für Energietechnik - ZET
Result of work at the UBT:	Yes
DDC Subjects:	500 Science > 540 Chemistry 600 Technology, medicine, applied sciences > 600 Technology 600 Technology, medicine, applied sciences > 620 Engineering 600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited:	09 Sep 2025 09:32
Last Modified:	09 Sep 2025 09:32
URI:	https://eref.uni-bayreuth.de/id/eprint/94614