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Vanadium-antimony oxide-based and molybdenum-activated catalyst for the selective ammoxidation of paraffins
Vanadium-antimony oxide-based and molybdenum-activated catalyst for the selective ammoxidation of paraffins
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机译:基于钒-锑氧化物的钼活化催化剂,用于石蜡的选择性氨氧化
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摘要
A process of manufacturing acrylonitrile or methacrylonitrile by the catalytic reaction in the vapor phase of a paraffin selected from propane and isobutane with molecular oxygen and ammonia by catalytic contact of the reactants in a reaction zone with a catalyst, the feed composition having a mole ratio of the paraffin to ammonia in the range of from about 2.5 to 16 and a mole ratio of paraffin to oxygen in the range of from about 1.0 to 10, wherein said catalyst has the elements in the proportions indicated by the empirical formula: VSbmAaMobDdOx where A is one or more of Ti, Sn, Fe, Cr and Ga; D is one or more of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn; m equals 0.8 to 4; a equals 0.01 to 2; 0 b 0.005; d is 0 to 2; x is determined by the oxidation state of the cations present, and the catalyst has been heat treated at a temperature of at least 780 DEG C.
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