| 摘要 |
PURPOSE: A composite oxide solid catalyst of a core-shell structure and a method for preparing 1,3-butadiene using the same are provided to improve the yield of the 1,3-butadiene based on C4 residual oil-III. CONSTITUTION: A composite oxide solid catalyst of a core-shell structure is represented by chemical formula 1. The core part of the catalyst is represented by (100-z)%Fe_fNi_gBi_hMo_mO_y + z%SiO_2, and the shell part of the catalyst is represented by Bi_nA_aO_x. In chemical formula 1, A is one or more elements which are selected from fourth family of the periodic table containing cobalt, nickel, potassium, manganese, and chromium; n, a, f, g, h, and m are the number of each element; if m is 1, n is 0.01-1, a is 0.001-3, f is 0.01-5, g is 0.1-5, and h is 0.0001-3; z is 1-90; and x and y are determined to satisfy the valence of the formula. |
