Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1976-06-21
1979-04-17
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252437, 252430, B01J 2714, B01J 3102
Patent
active
041499921
ABSTRACT:
In a method for preparing a phosphorus-vanadium-oxygen catalyst wherein a pentavalent vanadium compound and a trivalent phosphorus compound are brought together in a liquid reaction zone under conditions to provide a substantial amount of tetravalent vanadium and to form a phosphorus-vanadium-oxygen catalyst precursor having a phosphorus to vanadium atom ratio between about 0.9:1 and about 2:1, the improvement of this invention comprises adding a sufficient amount of a surfactant to the liquid reaction zone to form a dispersion which comprises a liquid, the surfactant and a dispersoid of the phosphorus-vanadium-oxygen catalyst precursor.
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Mount Ramon A.
Raffelson Harold
Robinson Warn D.
Gantz Delbert E.
Logomasini James C.
Monsanto Company
Passley Paul L.
Tater Stanley M.
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