Patent ID: 8242043

Claim:
A process for production of a supported catalyst to be used for production of a lower aliphatic carboxylic acid from a lower olefin and oxygen, characterized by comprising the following first, second and third steps in order First step A step of impregnating a carrier with a solution containing at least one compound comprising at least one element selected from elements of Groups 8, 9 and 10 of the Periodic Table (hereinafter referred to as (a) group compound), at least one chloride of an element selected from copper, silver and zinc (hereinafter referred to as (d) group compound), and an alkali metal salt of chloroauric acid, to obtain an impregnated carrier (A) Second step A step of contacting the impregnated carrier (A) with an alkaline substance and a compound comprising at least one element selected from gallium, indium, thallium, germanium, tin, lead, phosphorus, arsenic, antimony, bismuth, sulfur, selenium, tellurium and polonium (hereinafter referred to as (b) group compound) to obtain impregnated carrier (B) (where the alkaline substance and the (b) group compound may be contacted with impregnated carrier (A) either simultaneously or separately) Third step A step of contacting impregnated carrier (B) with a reducing substance to obtain supported catalyst (C).