초록 ▼

The preparation of phosphorus-vanadium oxidation catalyst by the reduction of the valence of vanadium to less than +5 is obtained by employing less than the stoichiometric amount of reducing agent necessary to reduce the valence of the vanadium from +5 to +4, preferably 70 to 98% of the stoichiometr

The preparation of phosphorus-vanadium oxidation catalyst by the reduction of the valence of vanadium to less than +5 is obtained by employing less than the stoichiometric amount of reducing agent necessary to reduce the valence of the vanadium from +5 to +4, preferably 70 to 98% of the stoichiometric amount of reducing agent can be used.

대표청구항 ▼

In the process for the preparation of vanadium-phosphorus containing oxidation catalysts comprising the reduction of pentavalent vanadium to a valence of less than +5 with a trivalent phosphorus compound, reducing agent, wherein the improvement comprises employing from about 75 to 90% of the stoichi

In the process for the preparation of vanadium-phosphorus containing oxidation catalysts comprising the reduction of pentavalent vanadium to a valence of less than +5 with a trivalent phosphorus compound, reducing agent, wherein the improvement comprises employing from about 75 to 90% of the stoichiometric amount of reducing agent necessary to reduce the valency of the vanadium from +5 to +4.