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Performance of Sulfur Tolerant Reforming Catalysts for Production of Hydrogen from Jet Fuel Simulants

Summary: Performance of Sulfur Tolerant Reforming Catalysts for Production
of Hydrogen from Jet Fuel Simulants
Amanda C. McCoy, Martin J. Duran, Abdul-Majeed Azad, Sudipta Chattopadhyay, and
Martin A. Abraham*,
Department of Chemical and EnVironmental Engineering, The UniVersity of Toledo, Toledo, Ohio 43606,
and Catacel Corp., 7998 Gotham Road, GarrettsVille, Ohio 44231
ReceiVed March 3, 2007. ReVised Manuscript ReceiVed August 2, 2007
The development of robust desulfurizers and new reforming catalysts is a critical path for the use of jet
fuels in powering the commercial growth of fuel cell systems for air and military applications. The presence
of high concentrations of sulfur-containing organic compounds leads to rapid deactivation of traditional reforming
catalysts, and removal of the sulfur components from the fuel through adsorptive methods is not practical for
long term operations. The current work describes the use of several ceria-based catalyst compositions that
were studied to assess their performance based on the formation of hydrogen and product yield from a fuel
consisting of toluene and thiophene. The effect of noble metals, metal oxide additives, and stabilized ceria
supports on the performance of the catalyst was studied. The addition of selected components led to higher
yields or greater stability; combinations of these additives were not necessarily synergistic. Interestingly, the
presence of sulfur in the fuel was shown to enhance the initial activity of catalysts containing rhodium. Analysis
in terms of the kinetic rates of reaction and deactivation illustrated the effects of these additives and provided
insight into the design of a more highly stable steam reforming catalyst for production of hydrogen from jet


Source: Azad, Abdul-Majeed - Department of Chemical and Environmental Engineering, University of Toledo


Collections: Materials Science; Energy Storage, Conversion and Utilization