Catalyst development for water–gas shift
Fuel Cell Technology and Applications
Hydrogen storage and hydrogen generation
Fuel processing from hydrocarbons to hydrogen
Published Online: 15 DEC 2010
Copyright © John Wiley & Sons, Ltd. All rights reserved.
Handbook of Fuel Cells
How to Cite
Ladebeck, J. R. and Wagner, J. P. 2010. Catalyst development for water–gas shift. Handbook of Fuel Cells.
- Published Online: 15 DEC 2010
In the industrial production of hydrogen and of synthesis gas the water gas shift reaction represents an essential step for the overall process efficiency of the process by increasing the hydrogen yield and by adjusting the desired ratio of hydrogen and carbon monoxide for a subsequent synthesis step. In addition to that in fuel cell technology it is absolutely necessary to decrease the CO content of the fuel hydrogen due to the limited CO tolerance of present day fuel cell anodes. To be successful applying water gas shift catalysts in hydrogen production for fuel cells especially in automotive systems some major obstacles of the commercial Cu/Zn/Al catalyst systems must be overcome. Major new demands are reduction of volume and weight by two to three orders of magnitude, oxidation resistance and improved tolerance for steam condensation and poisons, here mainly sulfur present in gas feedstock and in gasoline. Precious metal catalyst systems on rare earth metal oxides are most promising and could fulfill the requirements in nonstationary applications were conventional catalysts are not applicable.
- water gas shift;
- high temperature shift;
- low temperature shift;
- synthesis gas;
- carbon monoxide;
- precious metals;
- sulfur poisoning;
- steam reforming;
- autothermal reforming