| 摘要 |
1283369 Catalysts NITTO CHEMICAL INDUSTRY CO Ltd 31 Oct 1969 [2 Nov 1968] 53602/69 Addition to 1257489 Heading B1E An attrition resistant catalyst is prepared by forming a slurry containing a Sb(V) compound, a polyvalent metal compound and a silica sol with a pH of below 7 or so adjusting the pH of the slurry, subjecting the slurry to a temperature of 40-150‹C for at least 20 minutes, spray-drying the heat treated slurry to form substantially spherical particles, and calcining the particles at a temperature of 400-1100‹C. The catalyst prepared comprises the mixed oxides of Sb and the metal, which latter is preferably at least one of Fe, Co, Ni, Sn, U, Cr, Cu, Mn, Ti, V, Mo, W, Te, Bi, As, Th and Ce. |
