| 摘要 |
1,216,956. Cyanopyridines. FARBEN FABRIKEN BAYER A.G. 12 June, 1969 [10 July, 1968], No. 29734/69. Heading C2C. [Also in Division B1] Cyanopyridines are produced by reacting alkyl pyridines with oxygen or air, ammonia and optionally steam, in the gas-phase using as catalyst tin phosphate which has been activated with one or more compounds of molybdenum, vanadium, bismuth, iron or cobalt. |
