PREPARATION METHOD OF COMPOSITE METAL OXIDE CONTAINED CATALYST FOR PARTIAL OXIDATION

摘要

PURPOSE: A catalyst for gas phase partial oxidation comprising an inert support and composite metal oxide catalyst active components supported onto the support, a preparation method of the catalyst, and a preparation method of organic compounds partially oxidized by using the catalyst are provided. CONSTITUTION: The preparation method comprises a step (a) of preparing a composite metal oxide catalyst precursor solution by adding organic acid to solvent and salts of respective metal components composing composite metal oxide catalyst active components; a step (b) of adjusting pH of the precursor solution prepared as a basic solution; a step (c) of supporting the pH adjusted composite metal oxide catalyst precursor solution onto an inert support; a step (d) of removing the solvent; and a step (e) of firing a resulting material of the step (d), wherein the composite metal oxide catalyst active components are represented as formula 1, and the catalyst is used to prepare acrylic acid by reacting acrolein with oxygen: MoaWbVcAdBeOx (formula 1), where Mo is molybdenum, W is tungsten, V is vanadium, O is oxygen, A is one or more of elements selected from the group consisting of Fe, Cu, Bi, Cr, Sn, Sb and K, B is one or more of elements selected from the group consisting of alkaline earth metals, and a, b, c, d and e show atomic ratio of respective metals, and wherein b is 1 to 5, c is 1 to 6, d is 1 to 5, e is 0 to 3 and x is a value determined according to the oxidation state of other elements provided that a is 12.