(94g) Fecralloy Catalysts Partially Oxidize Methane to Syngas Selectively

Authors: 
Patience, G. S., Polytechnique Montreal
Boffito, D. C., Polytechnique Montreal
Ma, Z., Polytechnique Montreal
Pelegrin, D. C., Polytechnique Montreal
Micro Gas-to-Liquids technology (GtL) reduces flared natural gas and CO2emissions while producing valuable diesel. Integrating a high pressure syngas step with Fischer-Tropsch (FT) in a single vessel reduces investment and operating costs to synthesize GtL liquids. Catalytic methane partial oxidation (CPOX) to produce syngas for FT is an economic opportunity for micro-refineries. The CPOX catalysts should combine thermal resistance to high temperature (~1000 °C) and mechanical strength to high pressure (~2 MPa). FeCralloy knitted fibres resist high temperature, is highly conductive, and can be molded into shapes.

It is promising support that we overlaid washcoat of Al2O3 via spraying pyrolysis and of MgO via solution combustion synthesis (SCS). It is also highly reactive, which partially oxidizes methane to syngas. We explored a larger range of FeCralloy catalysts by depositing Pt/Rh and/or CeO2 over its surface. The selectivity to syngas of 1% Pt/Rh FeCralloy catalyst was better than other catalysts at 900 °C and from 0.1 MPa and 2 MPa. Here, we characterized the methane oxidation behavior versus temperature of 5 FeCralloy catalysts, in micro gauze reactor operated up to 950 °C at ambient pressure. Temperature higher than 550 °C activates the CPOX reaction. Oxygen reacted with methane to form H2, CO, and CO2 while in pure Argon methane decomposes to H2 and coke. We developped a kinetic model to predict its behavior.