B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 27/198 (2006.01) B01J 23/44 (2006.01) B01J 27/199 (2006.01) C07C 29/141 (2006.01) C07C 45/28 (2006.01) C07C 45/30 (2006.01)
Patent
CA 2077550
2077550 9113681 PCTABS00007 The present invention provides a process for the preparation of acidic aqueous solutions consisting essentially of phosphomolybdovanadate salts. Certain processes of the present invention dissolve in water an oxide, oxoacid, or mixtures thereof, and at least one oxoanion salt of phosphorus, molybdenum, and vanadium, wherein the sum of salt cationic charges does not exceed the sum of the phosphomolybdovanadate anionic charges in the solution. Other processes of the present invention dissolve in water a) an oxide, oxoacid, oxoanion salt, or mixtures thereof of phosphorus, molybdenum, and vanadium and b) a carbonate salt, bicarbonate salt, hydroxide salt or mixtures thereof, wherein the sum of salt cationic charges does not exceed the sum of the phosphomolybdovanadate anionic charges in the solution. The present invention also provides processes for the preparation of solid phosphomolybdovanadate salts by evaporating the so produced aqueous solutions to recover essentially all the dissolved phosphomolybdovanadate salt in solid form.
Grate John H.
Hamm David R.
Saxton Robert J.
Borden Ladner Gervais Llp
Catalytica Inc.
Grate John H.
Hamm David R.
Saxton Robert J.
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