Metal carbide catalysts and process for producing synthesis gas

Details Metal carbide catalysts and process for producing synthesis gas Metal carbide catalysts and process for producing synthesis gas

B - Operations, Transporting

01

J

B01J 27/22 (2006.01) B01J 23/24 (2006.01) B01J 37/08 (2006.01) C01B 3/38 (2006.01) C01B 3/40 (2006.01)

Patent

CA 2387912

Mixed metal carbide catalysts that are active for catalyzing the net partial oxidation of methane to CO and H2 are disclosed, along with their method of making. The preferred catalysts of the invention comprise a mixture of at least two carbided metals that are prepared by the reaction of the metal oxides, alkoxides or nitrates with a hydrocarbon of the formula CnH2n+2 wherein n is an integer from 1 to 4. Optionally, the catalysts include an additional promoter and/or a catalyst support. Preferred catalysts are at least 50 wt% molybdenum, tungsten or chromium, and also contain a second metal selected from the group consisting of molybdenum, tungsten, vanadium, chromium, iron, niobium, tantalum, rhenium, cobalt, copper, tin and bismuth.

L'invention concerne, d'une part, des catalyseurs en carbure métallique permettant de catalyser l'oxydation partielle nette de méthane en CO et H¿2?, et d'autre part, leur procédé de fabrication. Les catalyseurs recommandés pour l'invention comprennent un mélange d'au moins deux métaux carburés préparés par réaction des oxydes métalliques, des alkoxydes métalliques ou des nitrates métalliques avec un hydrocarbure représenté par la formule C¿n?H¿2n+2?, dans laquelle n est un entier relatif compris entre 1 et 4. Eventuellement, les catalyseurs comprennent un promoteur supplémentaire et/ou un support catalytique. Les catalyseurs recommandés présentent au moins 50 % en poids de molybdène, de tungstène ou de chrome, et ils contiennent également un second métal choisi parmi le groupe composé de molybdène, de tungstène, de vanadium, de chrome, de fer, de niobium, de tantale, de rhénium, de cobalt, de cuivre, d'étain et de bismuth.

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