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    Manufacture of phthalic anhydride from o-xylene or naphthalene
    3.
    发明授权
    Manufacture of phthalic anhydride from o-xylene or naphthalene 失效
    从邻二甲苯或萘制造邻苯二甲酸酐

    公开(公告)号：US4077984A

    公开(公告)日：1978-03-07

    申请号：US731005

    申请日：1976-10-08

    申请人： Kurt Blechschmitt ,  Peter Reuter ,  Friedrich Wirth ,  Paul Hornberger

    发明人： Kurt Blechschmitt ,  Peter Reuter ,  Friedrich Wirth ,  Paul Hornberger

    IPC分类号： C07D307/89 ,  B01J23/00 ,  B01J27/00 ,  C07C51/265 ,  C07C51/31

    CPC分类号： C07C51/265 ,  C07C51/313

    摘要： A process for the manufacture of phthalic anhydride by oxidizing o-xylene and/or naphthalene over a supported catalyst containing vanadium pentoxide and titanium dioxide, at from 350.degree. to 500.degree. C, in which the o-xylene or naphthalene is passed, with an oxygen-containing carrier gas, over the catalyst, and in which the catalyst in the first 25-50 per cent by volume of the total catalyst volume, in the direction of flow of the mixture of o-xylene or naphthalene and carrier gas, contains from 0.01 to 0.3 per cent by weight, based on titanium dioxide, of rubidium, but no phosphorus, in the active composition, while the remainder of the catalyst contains from 0.02 to 0.8 per cent by weight, based on titanium dioxide, of phosphorus, but no rubidium, in the active composition.

    摘要翻译： 一种通过在含有五氧化二钒和二氧化钛的负载型催化剂上氧化邻二甲苯和/或萘来制备邻苯二甲酸酐的方法，其中350℃至500℃，其中邻二甲苯或萘通过， 含氧载体气体在催化剂上，其中在邻二甲苯或萘和载气的混合物流动方向上，催化剂在总催化剂体积的最初25-50体积％中含有 在活性组合物中为0.01〜0.3重量％，基于二氧化钛，铷，但不含磷，而其余的催化剂含有0.02〜0.8重量％，以二氧化钛为基准的磷， 但没有铷，在活性组合物中。

    Supported catalysts containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and/or cesium, with or without zirconium dioxide
    5.
    发明授权
    Supported catalysts containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and/or cesium, with or without zirconium dioxide 失效
    负载型催化剂含有五氧化二钒，二氧化钛，磷，铷和/或铯，有或者没有二氧化锆

    公开(公告)号：US4324694A

    公开(公告)日：1982-04-13

    申请号：US157782

    申请日：1980-06-09

    申请人： Peter Reuter ,  Kurt Blechschmitt ,  Friedrich Wirth

    发明人： Peter Reuter ,  Kurt Blechschmitt ,  Friedrich Wirth

    IPC分类号： C07D307/89 ,  B01J23/22 ,  B01J27/18 ,  B01J27/198 ,  B01J37/02 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31 ,  B01J21/06 ,  B01J23/04 ,  B01J27/16

    CPC分类号： C07C51/265 ,  B01J23/22 ,  B01J27/198 ,  C07C51/313 ,  B01J37/0244

    摘要： A supported catalyst, containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and any optionally added cesium, with or without zirconium dioxide, in which the catalytic material contains from 1 to 40% by weight of V.sub.2 O.sub.5, from 60 to 99% by weight of TiO.sub.2 and/or ZrO.sub.2 and, based on the total amount of TiO.sub.2, ZrO.sub.2 and V.sub.2 O.sub.5, up to 2% by weight of phosphorus and up to 1.5% by weight of rubidium and/or cesium, and which comprises two layers, of which the inner layer contains more than 0.2 and up to 2% by weight of phosphorus, but no rubidium and/or cesium, and the outer layer contains from 0 to 0.2% by weight of phosphorus and from 0.02 to 1.5% by weight of rubidium and/or cesium, the outer layer accounting for from 10 to 90% by weight of the total catalytic material.

    摘要翻译： 一种负载催化剂，其含有五氧化二钒，二氧化钛，磷，铷和任何任选加入的铯，具有或不具有二氧化锆，其中催化材料含有1至40重量％的V 2 O 5，60至99重量％ TiO 2和/或ZrO 2，并且基于TiO 2的总量ZrO 2和V 2 O 5，高达2重量％的磷和至多1.5重量％的铷和/或铯，并且其包含两层，其中 内层含有多于0.2重量％至2重量％的磷，但不含铷和/或铯，外层含有0至0.2重量％的磷和0.02至1.5重量％的铷和/ 或铯，外层占总催化材料的10〜90重量％。