Open Access. Powered by Scholars. Published by Universities.®

Automotive Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Catalysis and Reaction Engineering

University of Pennsylvania

Publication Year

Articles 1 - 2 of 2

Full-Text Articles in Automotive Engineering

Anodes For Direct Oxidation Of Hydrocarbons In Solid Oxide Fuel Cells, Seungdoo Park, Hyuk Kim, Steven Mcintosh, Wayne L. Worrell, Raymond J. Gorte, John M. Vohs Jan 2001

Anodes For Direct Oxidation Of Hydrocarbons In Solid Oxide Fuel Cells, Seungdoo Park, Hyuk Kim, Steven Mcintosh, Wayne L. Worrell, Raymond J. Gorte, John M. Vohs

Departmental Papers (CBE)

In this paper we describe the development of Cu/CeO2/YSZ anodes for solid oxide fuel cells (SOFCs) that are active for the direct electrochemical oxidation of dry hydrocarbon fuels. A novel method for synthesizing thin-electrolyte, anode-supported cells is described. This method uses tape-casting of YSZ layers with graphite pore formers, followed by impregnation with aqueous solutions of Cu(NO3)2 and Ce(NO3)2. The performance of model SOFCs with Cu/CeO2/YSZ anodes while operating on a variety of dry hydrocarbon fuels, including methane, butane, decane, and synthetic diesel is reported.


Ultra-Thin Ceo2 Overlayer On Ysz Studied By X-Ray Surface Scattering, Wotjek Dmowski, S. Putna, Raymond J. Gorte, John M. Vohs, T. Egami Jan 1997

Ultra-Thin Ceo2 Overlayer On Ysz Studied By X-Ray Surface Scattering, Wotjek Dmowski, S. Putna, Raymond J. Gorte, John M. Vohs, T. Egami

Departmental Papers (CBE)

Transition metal catalysts such as Rh/Pt used in a three-way automotive catalytic converter have to perform reduction and oxidation functions at the same time. This can be accomplished only in a specific range of oxygen pressure and temperature. In order to maintain a constant partial pressure of oxygen in the vicinity of catalysts mixtures of ceria and zirconia are used. Ceria is an essential component due to its capability of storing oxygen under oxidizing and releasing oxygen under reducing conditions. However, this function deteriorates with time and eventually a catalytic converter stops working properly. It is not well understood ...