公开(公告)号：US4369327A

公开(公告)日：1983-01-18

申请号：US313177

申请日：1981-10-20

申请人： Dieter Stockburger ,  Wilhelm Schultz ,  Johannes E. Schmidt ,  Friedrich Wirth ,  Herwig Hoffmann ,  Bernhard Holzknecht ,  Klaus Wintermantel

发明人： Dieter Stockburger ,  Wilhelm Schultz ,  Johannes E. Schmidt ,  Friedrich Wirth ,  Herwig Hoffmann ,  Bernhard Holzknecht ,  Klaus Wintermantel

IPC分类号： C07D307/89 ,  C07C51/265 ,  C07C51/31

CPC分类号： C07C51/265 ,  C07C51/313

摘要： A process for the preparation of phthalic anhydride (PA) of catalytic oxidation of naphthalene or o-xylene with air, a preheated mixture of air and naphthalene or o-xylene being passed into a reactor charged with the catalyst, and the reaction gas leaving the reactor being passed through a separator in which the PA is separated out as a solid, in which process the air fed to the reactor is preheated, before or after the admixture of naphthalene or of o-xylene, by using it to cool the reaction gas in the PA separator.

摘要翻译： 制备萘和邻二甲苯与空气催化氧化邻苯二甲酸酐（PA）的方法，将预热的空气和萘或邻二甲苯的混合物送入装有催化剂的反应器中，并将反应气体离开 反应器通过分离器，其中PA作为固体分离，在该过程中，在萘或邻二甲苯的混合之前或之后，通过使用它来冷却反应气体，将进料到反应器的空气预热 在PA分离器中。

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％。