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Optimization of a water–gas shift reactor over a Pt/ceria/alumina monolith

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Oct 2006Publisher:Elsevier BVJournal:Journal of Power Sources, volume 160, pages 1,163-1,169 (issn: 0378-7753,

Authors: G. Germani; Yves Schuurman; Anne Sophie Quiney;

doi: 10.1016/j.jpowsour.2006.03.019

Optimization of a water–gas shift reactor over a Pt/ceria/alumina monolith

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Abstract

The water–gas shift (WGS) reaction is an important step in the purification of hydrogen for fuel cells. It lowers the carbon monoxide content and produces extra hydrogen. The constraints of automotive applications render the commercial WGS catalysts unsuitable. Pt/ceria catalysts are cited as promising catalysts for onboard applications as they are highly active and non-pyrophoric. This paper reports on a power law rate expression for a Pt/CeO2/Al2O3 catalyst. This rate equation is used to compare different reactor configurations for an onboard water–gas shift reactor. A one-dimensional heterogeneous model that accounts for the interfacial and intraparticle gradients has been used to optimize a dual stage adiabatic monolith reactor.

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