Catalysts for petrochemical catalysis
AssigneeSiluria Technologies, Inc.
InventorsJoel M. Cizeron, Erik C. Scher, Fabio R. Zurcher, Wayne P. Schammel, Greg Nyce, Anja Rumplecker, Jarod McCormick, Marian Alcid, Joel Gamoras, Daniel Rosenberg, Erik-Jan Ras
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Abstract
Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogenous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed.
Claims51
A method for the preparation of ethane, ethylene or combinations thereof, the method comprising contacting a catalyst with a gas comprising methane, the catalyst comprising:
- the formula Ln14-xLn2xO6, wherein Ln1 and Ln2 are each independently a different lanthanide element, and x is a number ranging from greater than 0 to less than 4;
- and
- at least one doping element from groups 1-16, lanthanides, actinides or combinations thereof,
- wherein the catalyst further comprises a C2 selectivity of greater than 50% and a methane conversion of greater than 20% when the catalyst is employed as a heterogeneous catalyst in the oxidative coupling of methane at a temperature of 750° C. or less.
A method for the preparation of ethane, ethylene or combinations thereof, the method comprising contacting a catalyst with a gas comprising methane, the catalyst comprising an oxide of a rare earth element, wherein the oxide of a rare earth element is a metal oxyhydroxide, metal oxyhalide, a metal oxynitrate or a metal phosphate, wherein the catalyst further comprises at least one doping element from groups 1-16, lanthanides, actinides or combinations thereof, wherein the catalyst comprises a C2 selectivity of greater than 50% and a methane conversion of greater than 20% when the catalyst is employed as a heterogeneous catalyst in the oxidative coupling of methane at a temperature of 750° C. or less.
Dependencies are inferred from the claim text.