中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.01 seconds)

    Catalytic Converter Arrangement with Optimized Surface for Producing Phthalic Anhydride
    3.
    发明申请
    Catalytic Converter Arrangement with Optimized Surface for Producing Phthalic Anhydride 审中-公开
    催化转化器布置与优化的表面生产邻苯二甲酸酐

    公开(公告)号：US20170044125A1

    公开(公告)日：2017-02-16

    申请号：US15305955

    申请日：2015-04-23

    Applicant: Clariant International Ltd.

    Inventor： Oliver RICHTER ,  Gerhard MESTL ,  Felix SCHULZ ,  Werner PITSCHI ,  Nadine FROMM ,  Peter SCHINKE

    IPC: C07D307/89 ,  B01J35/10 ,  B01J35/02 ,  B01J23/22

    CPC classification number: C07D307/89 ,  B01J8/067 ,  B01J21/063 ,  B01J23/22 ,  B01J27/198 ,  B01J35/023 ,  B01J35/026 ,  B01J35/1014 ,  B01J2208/00044 ,  B01J2208/00513 ,  B01J2208/025

    Abstract: A catalytic converter arrangement for producing phthalic anhydride by means of a gas phase oxidation of aromatic hydrocarbons, comprising a reactor with a gas inlet side for a reactant gas, a gas outlet side for a product gas, a first catalytic converter layer made of catalytic converter elements, and at least one second catalytic converter layer made of catalytic converter elements. The first catalytic converter layer is arranged on the gas inlet side, and the second catalytic converter layer is arranged downstream of the first catalytic converter layer in the gas flow direction. The catalytic converter elements have an outer layer of an active compound. The invention is characterized in that the active compound content in the first catalytic converter layer and/or in the second catalytic converter layer is below 7 wt. %, based on the total weight of the catalytic converter elements, and the ratio of the total surface of the active compound to the volume of the catalytic converter layer is preferably 10000 cm−1 to 20000 cm−1, in each catalytic converter layer.

    Abstract translation: 一种催化转化器装置，用于通过芳族烃的气相氧化生产邻苯二甲酸酐，包括具有用于反应气体的气体入口侧的反应器，用于产物气体的气体出口侧，由催化转化器制成的第一催化转化器层 元件和由催化转化器元件制成的至少一个第二催化转化器层。 第一催化转化器层设置在气体入口侧，第二催化转化器层设置在气体流动方向上的第一催化转化器层的下游。 催化转化元件具有活性化合物的外层。 本发明的特征在于，第一催化转化器层和/或第二催化转化器层中的活性化合物含量低于7wt。 ％，基于催化转化元件的总重量，并且在每个催化转化器层中，活性化合物的总表面与催化转化器层的体积的比率优选为10000cm -1至20000cm -1。

    PROCESS FOR PRODUCING A VPO CATALYST
    8.
    发明申请
    PROCESS FOR PRODUCING A VPO CATALYST 审中-公开

    公开(公告)号：US20200222893A1

    公开(公告)日：2020-07-16

    申请号：US16744257

    申请日：2020-01-16

    Applicant: Clariant International Ltd

    Inventor： Sebastian BOECKLEIN ,  Gerhard MESTL ,  Gabriele BINDSEIL ,  Rene HAUSMANN ,  Sarah LIMBRUNNER ,  Anna WALDSCHUETZ

    IPC: B01J37/16 ,  B01J37/02 ,  C07D307/60 ,  B01J27/18

    Abstract: The disclosure relates to a process for producing a VPO catalyst containing molybdenum and a vanadyl pyrophosphate phase, which comprises the steps: a) provision of a reaction mixture comprising a V(V) compound, a P(V) compound, an Mo compound, a reducing agent and a solvent, b) reduction of the V(V) compound by means of the reducing agent at least in parts to give vanadyl hydrogenphosphate in order to obtain an intermediate suspension, c) filtration of the intermediate suspension from step b) in order to obtain an intermediate, d) drying of the intermediate at a temperature of not more than 350° C. in order to obtain a dried intermediate and e) activation of the dried intermediate at a temperature above 200° C., characterized in that not more than 0.2% by weight of water, based on the weight of the reaction mixture, is present in step a) and no water is withdrawn during the reduction in step b). The disclosure further relates to a VPO catalyst which is able to be produced by the process of the disclosure and also a catalyst containing the molybdenum-containing vanadium-phosphorus mixed oxide.

Patent Agency Ranking