| 摘要 |
IT IS AN OBJECT OF THE PRESENT INVENTION TO PROVIDE A MIXED CATALYST F OR A VAPOR-PHASE CATALYTIC OXIDATION OR A VAPOR-PHASE CATALYTIC AMMOXIDATION REACTION OF PROPANE OR ISOBUTENE, CAPABLE OF PROVIDING A CORRESPONDING UNSATURATED ACID OR UNSATURATED NITRILE AT HIGH YIELD FROM PROPANE OR ISOBUTENE. A MIXED CATALYST FOR A VAPOR-PHASE CATALYTIC OXIDATION REACTION OR A VAPOR-PHASE CATALYTIC AMMOXIDATION REACTION OF PROPANE OR ISOBUTENE COMPRISES: (A) A COMPOSITE OXIDE REPRESENTED BY THE FOLLOWING COMPOSITION FORMULA (1): MO1VANBBSBCWDZEON (1) WHEREIN Z REPRESENTS AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF LA, CE, PR, YB, Y, SC, SR, AND BA; EACH OF A, B, C, D, AND N REPRESENTS AN ATOMIC RATIO OF EACH ELEMENT BASED ON MO ATOM; A IS IN A RANGE OF 0.01 ? A ? 1; B IS IN A RANGE OF 0.01 ? B ? 1; C IS IN RANGEOF 0.01 ? C ? 1; D IS IN A RANGE OF 0.001 ? D ? 1; E IS IN A RANGE OF 0 ? E ? 1; AND N REPRESENTS A NUMBER DETERMINED BY THE VALENCE OF A COMPONENT METAL; AND (B) A TUNGSTEN COMPOUND AT A RATIO OF THE FOLLOWING FORMULA (2): 0.001 < W < O3 |
