Oxidation catalyst and process for preparation thereof

Details Oxidation catalyst and process for preparation thereof Oxidation catalyst and process for preparation thereof

B - Operations, Transporting

01

J

252/52.K

B01J 27/18 (2006.01) B01J 27/199 (2006.01) C07C 45/65 (2006.01) C07C 51/25 (2006.01)

Patent

CA 1161822

Title of the Invention OXIDATION CATALYST AND PROCESS FOR PREPARATION THEREOF Abstract of the Disclosure A catalyst for the vapor-phase oxidation of an un- saturated hydrocarbon, alcohol, saturated aliphatic aldehyde or unsaturated aliphatic aldehyde having 4 carbon atoms, said catalyst comprising a molybdovanadophosphoric acid having X-ray diffraction lines (Cu-K.alpha. radiation) at 28=about 26.2°, about 10.5 , about 21.3° and about 30.3° and a crystal structure approximating that of its salt, and said catalyst having the composition represented by the general formula PaMobvcxdyeof wherein the dissociable protons of the molybdo- vanadophosphoric acid are omitted, X represents at least one element selected from the group consist- ing of sodium, potassium, rubidium, cesium, thallium, beryllium, magnesium, calcium, strontium, and barium, Y represents at least one element selected from the group consisting of copper, silver, arsenic, antimony, tellurium, cobalt bismuth and zirconium, and the subscripts a to f represent the atomic proportions of the respective elements, provided that when b is 12, a is 0.1 - 3.0, c is 0 - 6.0 (exclusive of 0), d is 0 - 10.0, e is 0 - 5.0, and f is a value determined by the atomic valences and atomic proportions of the respective elements.

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