IT1063507B - Phthalonitrile prepn. from o-xylene ammonia oxygen and catalyst - contg. bismuth, antimony, molybdenum and chromium or vanadium oxides
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Phthalonitrile prepn. from o-xylene ammonia oxygen and catalyst - contg. bismuth, antimony, molybdenum and chromium or vanadium oxides
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IT1063507B
IT1063507BIT2427276AIT2427276AIT1063507BIT 1063507 BIT1063507 BIT 1063507BIT 2427276 AIT2427276 AIT 2427276AIT 2427276 AIT2427276 AIT 2427276AIT 1063507 BIT1063507 BIT 1063507B
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A process for the prepn. of phthalonitrile comprises reacting o-xylene with ammonia and oxygen, opt. mixed with inert gas, at 350-550 degrees C in the presence of a catalyst deposited on a support. The catalyst is a mixture of either (A)Bi, Sb, Mo and Cr oxides in molar ratio 1 to 15: 1 to 10: 0.5 to 5:0.5 to 20 or (B) Bi, Sb, Mo and V oxides in molar ratio 1 to 20: 1 to 10: 0.1 to 15:1 to 20. The prod. is used to prepare phthalocyanine pigments, dyes, lakes, stabilisers and other materials. Compared with previous processes the above gives a better yield (about 87%) and production rate (about 270 g/l catalyst/hr compared with 100-120 previously).
IT2427276A1976-06-141976-06-14Phthalonitrile prepn. from o-xylene ammonia oxygen and catalyst - contg. bismuth, antimony, molybdenum and chromium or vanadium oxides
IT1063507B
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