Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Patent
1994-11-09
1998-08-11
McGinty, Douglas J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
423306, B01J 2718, B01J 3704, B01J 3728
Patent
active
057927219
ABSTRACT:
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.
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Grate John H.
Hamm David R.
Saxton Robert J.
Catalytica Inc.
Grate John H.
McGinty Douglas J.
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