Preparation of dicarboxylic anhydrides
    1.
    发明授权
    Preparation of dicarboxylic anhydrides 失效
    二羧酸酐的制备

    公开(公告)号:US4167516A

    公开(公告)日:1979-09-11

    申请号:US881196

    申请日:1978-02-27

    申请人: Ralph O. Kerr

    发明人: Ralph O. Kerr

    摘要: A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr and one or more of Y, Sm, Tb or Eu. Preferred are those compositions containing in addition one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.

    摘要翻译: 用于将烷烃部分氧化成相应酸酐的催化剂复合物,例如将蒸气相中的正常C 4烃转化为马来酸酐,其包含钒,磷,氧,Nb,Cu,Mo,Ni,Co和Cr组分和一种 以上的Y,Sm,Tb或Eu。 优选含有Ce,Nd,Ba,Hf,U,Ru,Re,Li或Mg中的一种或多种的那些组合物。

    Catalyst treatment
    8.
    发明授权
    Catalyst treatment 失效
    催化剂处理

    公开(公告)号:US4006168A

    公开(公告)日:1977-02-01

    申请号:US563740

    申请日:1975-03-31

    申请人: Ralph O. Kerr

    发明人: Ralph O. Kerr

    摘要: Molybdenum - vanadium - oxygen oxidation catalyst for producing maleic anhydride from benzene is regenerated and stabilized by the addition of a compound of Mo, Ni, Co, Mn or U, preferably a volatile compound, to the catalyst, after a decline in activity.

    摘要翻译: 在活性下降后,通过向催化剂中添加Mo,Ni,Co,Mn或U化合物,优选挥发性化合物,再生和稳定用于从苯生产马来酸酐的钼 - 钒 - 氧氧化催化剂。