Catalytic oxidative process for producing maleic anhydride
    93.
    发明授权
    Catalytic oxidative process for producing maleic anhydride 失效
    用于生产马来酸酐的催化氧化方法

    公开(公告)号:US4110350A

    公开(公告)日:1978-08-29

    申请号:US816916

    申请日:1977-07-19

    摘要: Unsaturated hydrocarbons having 4 to 6 carbon atoms are catalytically oxidized into maleic anhydride by using a catalyst, which consists essentially of oxides of (A) vanadium, (B) phosphorus, (C) titanium and (D) optionally at least one element selected from sodium, calcium, magnesium, iron, zirconium, boron, manganese, silver and molybdenum in the atomic ratios defined by the following formulaVP.sub.a Ti.sub.b X.sub.c O.sub.dwherein X is the element (D) set forth above and a=1.0 to 5.0, b=2.0 to 12.0 and c=0 to 1.0, and which catalyst is prepared by calcining a mixture of a vanadium-containing compound and titanium dioxide at a temperature of 650.degree. C. to 1,500.degree. C., incorporating into the mixture a phosphorus-containing compound and optionally the element "X"-containing compound and, then, heating the resulting mixture.

    摘要翻译: 具有4-6个碳原子的不饱和烃通过使用催化剂催化氧化成马来酸酐,所述催化剂基本上由(A)钒,(B)磷,(C)钛和(D​​)的氧化物组成,任选地至少一种选自 钠,钙,镁,铁,锆,硼,锰,银和钼,其原子比由下列化学式定义:VPaTibXcOd WHEREIN X是上述元素(D),a = 1.0至5.0,b = 2.0至12.0 并且c = 0至1.0,并且通过在650℃至1500℃的温度下煅烧含钒化合物和二氧化钛的混合物来制备该催化剂,将含磷化合物和任选地 含有元素“X”的化合物,然后加热所得混合物。