Preparation of catalyst and use for high yield conversion of methane to ethylene

  • US 7,250,543 B2
  • Filed: 11/09/2006
  • Issued: 07/31/2007
  • Est. Priority Date: 04/29/2003
  • Status: Expired due to Fees
First Claim
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1. A method of oxidative coupling of methane for the formation of heavier hydrocarbons, the method comprising the steps of:

  • producing a perovskite catalyst, the catalyst produced by a process comprising;

    forming an aqueous slurry comprising an alkaline earth metal salt, a powdered metal salt and a powdered transition metal oxide,wherein the alkaline earth metal is selected from the group consisting of barium, calcium and strontium salts, and wherein the metal oxide is titanium oxide;

    adding a polymeric binder to the slurry to form a paste;

    drying the paste for forming a powder;

    heating the powder at increasing temperatures at apredetermined profile commensurate with the polymeric binder; and

    calcining the heated powder; and

    contacting a feed gas stream containing methane and oxygen in an oxidative coupling reactor under oxidative coupling conditions in the presence of the perovskite catalyst.

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