Patent ID: 9550174
Date: 2017-01-24
CPC Classifications: B01J,C07C,Y02P

Claim:
1. A method of preparing a mixed manganese ferrite coated catalyst for use in preparing 1,3-butadiene, comprising: a) co-precipitating a precursor aqueous solution comprising a manganese precursor and an iron precursor while being mixed in a basic solution, thus forming a co-precipitated solution; b) washing and filtering the co-precipitated solution, thus obtaining a solid sample of mixed manganese ferrite which is then dried at 70˜200° C.; c) mixing the dried solid sample of mixed manganese ferrite, a binder of alumina, distilled water and an acid at a weight ratio of 1:1˜1,5: 8˜10:0.4˜0.6 at room temperature, thus obtaining a mixture, wherein said alumina is boehmite and the acid is selected from the group consisting of nitric acid, sulfuric acid, hydrochloric acid and phosphoric acid; and d) adding a support to the mixture obtained in c) and then performing blending and drying, wherein said drying is performed at 50˜80° C., and the support is silicon carbide.