| 摘要 |
1342456 Ammoxidation process SNAM PROGETTI SpA 21 April 1972 [23 April 1971] 18744/72 Heading C2C [Also in Divisions B1- B2] Acrylonitrile is produced by the ammoxidation of propylene in the presence of a catalyst prepared by drying a mixture of oxides of Fe and Sb, adding ammonium bicarbonate or urea as porogen, pressing or extruding the mixture and heating to activate the catalyst and remove the porogen. |
