Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Patent
1994-10-19
1996-04-23
Rizzo, Nicholas
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
549259, B01J 2718, B01J 2719, B01J 27198, C07D30734
Patent
active
055103081
ABSTRACT:
This invention relates to heteropolyacids characterized by their comprising phosphorus as the heteroatom and molybdenum and/or tungsten at octahedral sites, some of the molybdenum and/or tungsten having been replaced with vanadium and at least one transition metal or main group cation, the vanadium and cation occupying the octahedral sites surrounding the phosphorus heteroatom in the heteropolyacid structure. This invention also concerns the use of these heteropolyacids as catalysts in the oxidation of n-butane to maleic anhydride.
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E. I. Du Pont de Nemours and Company
Rizzo Nicholas
Wong King L.
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