| 摘要 |
1332832 Ammoxidation catalysts DEUTSCHE GOLD-UND SILDER-SCHEIDEANSTALT 11 Sept 1970 [26 Sept 1969] 24267/73 Divided out of 1332831 Heading B1E Compositions consist of a mixture of oxides of antimony and tungsten optionally together with one or more compounds of manganese, chromium, iron, cobalt, nickel, or copper and optionally a support, the atomic ratio of antimony to tungsten being 1.1:1 to 50:1, which has been pretreated by heating at 650-1100‹C in the presence of oxygen. |
