| 摘要 |
1,130,846. Oxazole; acrylonitrile and acetonitrile; acrolein. BP CHEMICALS (U.K.) Ltd. 21 April, 1967 [11 May, 1966], No. 20801/66. Heading C2C. Oxazole and by-products acrylonitrile, acetonitrile and acrolein are produced by reacting at elevated temperatures in the vapour phase propylene with O 2 and NH 3 over an oxidation catalyst, the proportion of propylene in the feed being at least 4% by volume, the concentration of NH 3 being at least 4% by volume and the molar ratio of O 2 to olefine being at least 2. The oxazole can be separated from the by-products by fractional distillation, solvent extraction or hydroextraction. |
