(265b) Tri-Reforming of Methane and CO2: A Novel Concept for Catalytic Production of Solid Waste Syngas with Desired H2/CO Ratios for Liquid Biofuels

Devin M. Walker, John N. Kuhn, Philip Saraneeyavongse, and John T. Wolan*

Department of Chemical & Biomedical Engineering, University of South Florida

This study focuses on upgrading the Municipal Solid Waste (MSW) syngas for the synthesis of liquid fuels using Fischer-Tropsch synthesis (FTS).  The process includes novel gasification of MSW via a tri-reforming process which involves a synergetic combination of CO₂ reforming, steam reforming, and partial oxidation of methane. Typical biomass or MSW derived syngas H₂:CO is 1:1.  This innovation allows for cost-effective one-step production of syngas in the required H₂:CO of 2:1 for use in the FTS.  To maximize the performance of the tri-reforming catalyst an attempt to control oxygen mobility, thermal stability, dispersion of metal, resistance to coke formation, and strength of metal interaction with support is investigated by varying catalyst synthesis parameters.   These synthesis variables include Ce and Zr mixed oxide support ratios and amount Mg and Ni loading.  Testing under controlled reaction conditions and the use of various catalyst characterization techniques were employed to better explain the affects of the synthesis parameters.  This paper highlights the performance of the tri-reforming catalyst and attempts to explain results through catalyst characterization.