Catalysis for synthesis gas formation from reforming of methane

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Cobalt–tungsten η-carbide [Co6W6C] is the precursor for a novel stable and active catalyst for “dry” reforming of methane with carbon dioxide to produce synthesis gas. Once the catalyst is pretreated, the catalyst activity is unchanged after 150 h on stream, and the H2/CO ratio is maintained close to unity. X-ray diffraction patterns show the formation of a WC phase, Co and carbon in the stabilized catalyst. Carbon deposition, which leads to severe problems for commercial nickel catalysts, actually helps in the creation of the stable catalyst.

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