Method for the preparation of high activity phosphomolybdic...

Details Method for the preparation of high activity phosphomolybdic... Method for the preparation of high activity phosphomolybdic...

B - Operations, Transporting

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252/52.K, 260/52

B01J 27/19 (2006.01) B01J 27/188 (2006.01) C07C 51/235 (2006.01) C07C 51/25 (2006.01) C07C 57/055 (2006.01) B01J 37/02 (2006.01)

Patent

CA 1191828

Abstract of the Disclosure The present invention relates to a method for the preparation of phosphomolybdic acid based catalysts by forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkyl alcohol, optionally adding a base to the solution, evaporating the solution to yield a catalyst powder and thereafter drying and calcining the powder to form the active catalyst. A second method for preparation is also provided and includes the steps of forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkyl alcohol evaporating the solution to form a concentrate, impregnating a catalyst support material with the concentrate, contacting the impregnated support with ammonia gas in an amount sufficient to form an insoluble precipitate of ammonium alkyl phosphomolybdic acid within the pore structure of said support material and thereafter drying and calcining said impregnated support material so as to form a coated catalyst.

401808

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