COMPOSITE METAL OXIDE MATERIAL
    2.
    发明专利

    公开(公告)号:JPH09131532A

    公开(公告)日:1997-05-20

    申请号:JP20593796

    申请日:1996-08-05

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To make the efficient contact gaseous phase oxidation of a low mol.wt. org. compd. possible by using a multiple metal oxide material which has a multiphase structure expressed by the specific formula and contains molybdenum, vanadium and >=1 kinds of tungsten, niobium, tantalum, chromium and cerium. SOLUTION: This multiple metal oxide material is expressed by the formula [A]p [B]q (where, A denotes Mo12 Va X b X c X d X e X f X g Ox (active phase); B denotes X 12 Cub Hi Oy (promoter phase); X denotes W, Nb, Cr, etc.; X denotes Cu, Ni, Co, etc.; X denotes Sb, etc.; X denotes Na, K, etc.; X denotes Ca, Sr, Ba, etc.; X denotes Si, Al, Ti, etc.; X denotes Mo, W, etc.; (x), (y) are each the number determined by the valency and frequency of the elements exclusive of oxygen]. The three-dimensionally spread ranges A, B of the components [A]p , [B]q are distributed relatively and similarly like in the mixture composed of the fine A and the fine B with each other.

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