OKSYDASJONSKATALYSATOR BESTAAENDE AV OKSYDER ELLER OKSYDKOMPLEKSER AV WOLFRAM, VANADIUM OG MOLYBDEN, SAERLIG TIL BRUK VED FREMSTILLING AV AKRYLSYRE OG METAKRYLSYRE

摘要

CATALYST COMPOSITIONS ESPECIALLYUSEFUL FOR PREPARATION OF UNSATURATED ACIDSABSTRACT OF THE DI DISCLOSUREThe present invention is a catalyst compositionconsisting of oxides or oxide complexes that containscatalytically significant amounts of uranium or thoriumplus, tungsten, vanadium and molybdenum plus optionallyone or more of Co, Fe, Ni, ZN, Cu, Mg, Mn, Bi, Ti, Zr, Sn, Pan alkali metal, an alkaline earth metal, lanthanum or anelement of the lantbanoid series. These catalysts areespecially useful for producing acrylic acid from acroleinand for producing methacrylic acid from methacrolein.