METHOD FOR PRODUCING CATALYST FOR DIRECTLY CRACKING LOWER HYDROCARBON

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a catalyst for directly cracking lower hydrocarbons which can efficiently crack lower hydrocarbons using scrap materials.

SOLUTION: An aqueous solution of aluminum chloride that is obtained by dissolving a material of waste aluminum in an aqueous solution of hydrochloric acid is used as a raw material of the catalyst carrier. An aqueous solution of iron chloride or an aqueous solution of iron nitrate that is obtained by dissolving a material of waste iron in an aqueous solution of hydrochloric acid or nitric acid is used as a catalyst raw material. In order to precipitate the aqueous solution of aluminum chloride as aluminum hydroxide by neutralization, an aqueous solution of sodium hydroxide or ammonia is used for filtration. Aluminum hydroxide is separated from an aqueous solution of sodium chloride or an aqueous solution of ammonium chloride. Iron-carrying alumina is obtained by impregnating the separated aluminum hydroxide with the aqueous solution of iron chloride or the aqueous solution of iron nitrate and evaporating the same to dryness.

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