Patent ID: 8674156
Filing Date: 2014-03-18
Classification: B01J,C07C

Abstract:
1. A method of producing a mixed manganese ferrite catalyst for preparing 1,3-butadiene, comprising: (A) providing an aqueous precursor solution including a manganese precursor and an iron precursor, in which atom ratio of iron (Fe) to manganese (Mn) is 1.8˜2.4; (B) mixing the aqueous precursor solution with an alkaline solution having a molar concentration of 1.5˜4.0 M at a temperature of 10˜40° C. to form a coprecipitated solution; (C) washing and filtering the coprecipitated solution to obtain a solid catalyst; (D) drying the solid catalyst at 70˜200° C.; and (E) heat-treating the dried solid catalyst at 350˜800° C. to obtain the mixed manganese ferrite catalyst consisting of iron oxide (α-Fe