| 摘要 |
THE PRESENT INVENTION PROVIDES A COMPOSITE OXIDE CATALYST COMPRISING A CATALYST PARTICLE INCLUDING MO, V, A COMPONENT X AND A CARRIER CONTAINING SILICA, WHEREIN THE COMPONENT X IS AT LEAST ONE ELEMENT SELECTED FROM ALKALINE EARTH METAL ELEMENTS AND RARE EARTH ELEMENTS, WHEREIN THE COMPOSITE OXIDE CATALYST IS CARRIED BY THE CARRIER, AND WHEREIN THE COMPONENT X IS UNIFORMLY DISTRIBUTED IN THE CATALYST PARTICLE. |
