Catalysis Letters

, Volume 73, Issue 1, pp 15–19

Steam reforming of n-butane on Pd/ceria

  • X. Wang
  • R.J. Gorte
Article

DOI: 10.1023/A:1009070118377

Cite this article as:
Wang, X. & Gorte, R. Catalysis Letters (2001) 73: 15. doi:10.1023/A:1009070118377

Abstract

We have examined the steam reforming of n-butane on ceria, 1 wt% Pd/ceria, 1 wt% Pd/alumina, and 15 wt% Ni/silica between 573 and 873 K, with H2O : C ratios between 1.0 and 2.0. No stable rates could be observed on Ni/silica due to rapid coking under these conditions. While rates were stable on the other catalysts, Pd/ceria showed a much higher activity than either Pd/alumina or ceria individually. Of additional interest, CO2 : CO ratios were much higher on Pd/ceria and approached equilibrium. The reaction order for n-butane on Pd/ceria was 0.15. For H2O, reaction order changed from 0.6 to zero at the stoichiometric, n-butane : H2O ratio. It is suggested that the high activity of Pd/ceria for this reaction is due to a dual-function mechanism, in which ceria can be oxidized by H2O and then supply oxygen to the Pd.

n-butanesteam-reformingceriaPd/ceriaPd/aluminaNi/silicafuel cells

Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • X. Wang
    • 1
  • R.J. Gorte
    • 1
  1. 1.Department of Chemical EngineeringUniversity of PennsylvaniaPhiladelphiaUSA