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85 条记录 (耗时 0.028 秒)

    Chromium- and nickel-free hydrogenation of hydroformylation mixtures
    53.
    发明授权
    Chromium- and nickel-free hydrogenation of hydroformylation mixtures 有权

    公开(公告)号：US10245578B2

    公开(公告)日：2019-04-02

    申请号：US15790800

    申请日：2017-10-23

    申请人： Evonik Degussa GmbH

    发明人： Florian Klasovsky ,  Robert Franke ,  Frank Geilen ,  Andreas Jess ,  Wolfgang Korth ,  Thomas Quandt ,  Arne Reinsdorf

    IPC分类号： C07C29/00 ,  B01J23/00 ,  B01J21/00 ,  B01J23/72 ,  B01J21/08 ,  B01J37/02 ,  B01J37/08 ,  C07C29/141

    摘要： The invention is concerned with catalysts for heterogeneous hydrogenation of oxo process aldehydes. The problem addressed by the invention is that of developing a catalyst containing neither chromium nor nickel. In addition, it is to enable the economically viable hydrogenation of aldehyde mixtures originating from industrial oxo processes on the industrial scale. For this purpose, the catalyst should not be reliant on costly precious metals such as Ru, Pd or Pt. This problem was solved by omitting the chromium and nickel in the preparation of a conventional Cu/Ni/Cr system, such that a catalyst wherein only copper occurs as hydrogenation-active component on the support material thereof, and not chromium or nickel, is obtained. What is surprising here is that a functioning catalyst for the purpose intended still arises at all even though two of three hydrogenation-active metals are omitted. However, this requires as necessary conditions that support material used is silicon dioxide and that the content of Cu and SiO2 in the active catalyst is set accurately within very tight limits.

    Process for the preparation of esters by means of carbonylation of ethers
    55.
    发明授权
    Process for the preparation of esters by means of carbonylation of ethers 有权

    公开(公告)号：US10087134B2

    公开(公告)日：2018-10-02

    申请号：US15651062

    申请日：2017-07-17

    申请人： EVONIK DEGUSSA GMBH

    发明人： Kaiwu Dong ,  Ralf Jackstell ,  Helfried Neumann ,  Matthias Beller ,  Dirk Fridag ,  Dieter Hess ,  Katrin Marie Dyballa ,  Frank Geilen ,  Robert Franke

    IPC分类号： C07C67/37 ,  B01J27/13 ,  C07F9/58

    摘要： The invention relates to a process comprising the process steps of: a) initially charging an ether having from 3 to 30 carbon atoms; b) adding a phosphine ligand and a compound comprising Pd, or adding a comprising Pd and a phosphine ligand; c) feeding in CO; d) heating the reaction mixture, with conversion of the ether; wherein the phosphine ligand is a compound of formula (I) where m and n are each independently 0 or 1; R1, R2, R3, R4 are each independently selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl, —(C3-C20)-heteroaryl; at least one of the R1, R2, R3, R4 radicals is a —(C3-C20)-heteroaryl radical; and R1, R2, R3, R4, if they are —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl or —(C3-C20)-heteroaryl, may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —O—(C1-C12)-alkyl, —O—(C1-C12)-alkyl-(C6-C20)-aryl, —O—(C3-C12)-cycloalkyl, —S—(C1-C12)-alkyl, —S—(C3-C12)-cycloalkyl, —COO—(C1-C12)-alkyl, —COO—(C3-C12)-cycloalkyl, —CONH—(C1-C12)-alkyl, —CONH—(C3-C12)-cycloalkyl, —CO—(C1-C12)-alkyl, —CO—(C3-C12)-cycloalkyl, —N—[(C1-C12)-alkyl]2, —(C6-C20)-aryl, —(C6-C20)-aryl-(C1-C12)-alkyl, —(C6-C20)-aryl-O—(C1-C12)-alkyl, —(C3-C20)-heteroaryl, —(C3-C20)heteroaryl-(C1-C12)-alkyl, —(C3-C20)-heteroaryl-O—(C1-C12)-alkyl, —COOH, —SO3H, —NH2, halogen; and wherein no alcohol is added to the reaction mixture.