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    Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide
    4.
    发明授权
    Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide 有权
    通过含有氧化钒，二氧化钛和氧化锑的催化剂生产醛，羧酸和/或羧酸酐

    公开(公告)号：US07371893B2

    公开(公告)日：2008-05-13

    申请号：US10557791

    申请日：2004-05-21

    申请人： Sebastian Storck ,  Jürgen Zühlke ,  Samuel Neto ,  Frank Rosowski

    发明人： Sebastian Storck ,  Jürgen Zühlke ,  Samuel Neto ,  Frank Rosowski

    IPC分类号： C07C51/16 ,  C07D307/89

    CPC分类号： C07C51/265 ,  C07C51/313 ,  C07C63/16

    摘要： A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a bed of a first catalyst and a bed which is made up of a second catalyst having a higher activity than the first catalyst and is located downstream of the first catalyst in the flow direction of the gaseous stream, wherein the catalytically active composition of the first catalyst comprises at least vanadium oxide, titanium dioxide and antimony oxide and the ratio of vanadium, calculated as V2O5, to antimony, calculated as Sb2O3, in the first catalyst is from 3.5:1 to 5:1. The source of antimony oxide used for the first catalyst is preferably particulate antimony trioxide having a mean particle size of from 0.5 to 5 μm. The process allows the desired oxidation products to be obtained in high yield over longer periods of time.

    摘要翻译： 给出了制备醛，羧酸和/或羧酸酐，特别是邻苯二甲酸酐的方法的描述，其中包含芳族烃和分子氧的气流在升高的温度下通过第一催化剂的床和 床，其由比第一催化剂高的活性的第二催化剂组成，并且位于气流的流动方向上位于第一催化剂的下游，其中第一催化剂的催化活性组合物至少包含氧化钒，钛 二氧化锑和氧化锑，以V 2 O 5 5计算的钒与锑的比例计算为Sb 2 O 3 在第一催化剂中为3.5:1至5:1。 用于第一催化剂的氧化锑的来源优选是平均粒径为0.5-5微米的颗粒状三氧化锑。 该方法允许在较长时间内以高产率获得所需的氧化产物。

    Method for producing phthalic anhydride
    6.
    发明授权
    Method for producing phthalic anhydride 有权
    邻苯二甲酸酐的制造方法

    公开(公告)号：US07390911B2

    公开(公告)日：2008-06-24

    申请号：US10557705

    申请日：2004-05-15

    申请人： Samuel Neto ,  Jürgen Zühlke ,  Sebastian Storck ,  Frank Rosowski

    发明人： Samuel Neto ,  Jürgen Zühlke ,  Sebastian Storck ,  Frank Rosowski

    IPC分类号： C07D307/89

    CPC分类号： C07C51/265 ,  C07C51/313 ,  C07D307/89 ,  C07C63/16

    摘要： The invention relates to a process for preparing phthalic anhydride, in which the catalytic gas-phase oxidation of o-xylene and/or naphthalene is carried out over at least three zones of catalysts of increasing activity, with only the last zone of the catalyst system containing phosphorus and the last zone also comprising at least 10% by weight of vanadium (calculated as V2O5) based on the active composition of the catalyst and having a ratio of vanadium (calculated as V2O5) to phosphorus of greater than 35.

    摘要翻译： 本发明涉及一种制备邻苯二甲酸酐的方法，其中邻二甲苯和/或萘的催化气相氧化在活性增加的催化剂的至少三个区域上进行，只有催化剂体系的最后一个区域 并且最后一个区域还包含至少10重量％的钒（以V 2 O 5 N计算），基于催化剂的活性组成，并且其比例 的钒（以V 2 O 5计算）至大于35的磷。