Process for the production of maleic anhydride by the oxidation of butane
    31.
    发明授权
    Process for the production of maleic anhydride by the oxidation of butane 失效
    通过丁烷氧化生产马来酸酐的方法

    公开(公告)号:US4564688A

    公开(公告)日:1986-01-14

    申请号:US594328

    申请日:1984-03-28

    IPC分类号: C07C51/215 C07D307/60

    CPC分类号: C07C51/215

    摘要: A process for the manufacture of a phosphorus-vanadium oxide and a phosphorus-vanadium-co-metal catalyst suitable for the oxidation of butane to maleic anhydride is disclosed. The catalyst is prepared by reacting, in an aqueous medium, a vanadium compound, inorganic acid and, if used, a metal oxide. Ortho-phosphoric acid is then added to form a soluble vanadium-phosphorus or a vanadium-phosphorus-metal catalyst. The acidified water is removed and aliphatic alcohols and either aromatic acids or aromatic anhydrides, or a mixture of these, are added and the alcohols are removed. The solid phosphorus-vanadium, or phosphorus-vanadium-metal oxide is recovered under vacuum.

    摘要翻译: 公开了一种制备适用于将丁烷氧化成马来酸酐的磷 - 钒氧化物和磷 - 钒 - 金属 - 金属催化剂的方法。 催化剂通过在水性介质中使钒化合物,无机酸和(如果使用的话)金属氧化物反应来制备。 然后加入正磷酸形成可溶性钒 - 磷或钒 - 磷 - 金属催化剂。 除去酸化的水,并加入脂族醇和芳族酸或芳族酸酐或这些的混合物,并除去醇。 在真空下回收固体磷钒或磷 - 钒 - 金属氧化物。