| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preparing a catalyst which is used in the gas phase catalytic oxidation of propane, and enables a high yield production of acrylic acid. SOLUTION: A method consists of a process 1 in which antimony is oxidized to be pentavalent by reacting a monoperoxovanadium ion aqueous solution with a compound containing trivalent antimony by heating in an aqueous medium and a process 2 in which the product of the process 1 is added with a Mo compound and an A (defined separately) compound and the mixture is mixed uniformly and burned to convert the metal into oxide. A catalyst for producing acrylic acid by the gas phase catalytic oxidation of propane can be prepared from metal oxide the metal ratio of which is expressed by a composition formula of Mo Vi SBj Ak in which A is Nb or Ta; i, j, k are each 0.001-3.0. |
