Process for the production of alcohols and diols
    42.
    发明授权
    Process for the production of alcohols and diols 失效
    制备醇和二醇的方法

    公开(公告)号:US5395991A

    公开(公告)日:1995-03-07

    申请号:US175545

    申请日:1993-12-30

    CPC classification number: C07C29/149 C07C31/276 C07C2101/14 Y02P20/584

    Abstract: A hydrogenation process is described for the production of a hydroxylic compound selected from alcohols and diols by hydrogenation of a corresponding unsaturated organic compound selected from esters, diesters and lactones which involves use of two hydrogenation zones (11, 36), each containing a charge of a hydrogenation catalyst (12, 37). In a first phase of operation one of the hydrogenation zones (36 or 11) is in standby condition and a stream of hot hydrogen-containing gas is passed therethrough. Meanwhile a vaporous feed stream comprising a hydrogen-containing gas and the unsaturated organic compound to be hydrogenated, e.g. dimethyl 1,4-cyclohexanedicarboxylate, is fed to the active zone (11 or 36). This feed stream can include the gas stream from the first mentioned hydrogenation zone (36 or 11). In a second phase of operation the roles of the reactors (11, 36) are switched so that the zone (36 or 11) previously in reactivation condition becomes the active zone whilst the zone that was formerly active (11 or 36) goes into reactivation condition and its partially deactivated catalyst charge is reactivated by the hot hydrogen-containing gas stream.

    Abstract translation: 描述了氢化方法,用于通过氢化选自酯,二酯和内酯的相应的不饱和有机化合物来制备选自醇和二醇的羟基化合物,其包括使用两个氢化区(11,36),每个含有 氢化催化剂(12,37)。 在第一阶段的操作中,一个氢化区(36或11)处于待机状态,热的含氢气体流通过。 同时,包含含氢气体和待氢化的不饱和有机化合物的气态进料流,例如。 1,4-环己烷二羧酸二甲酯进料到活性区(11或36)。 该进料流可以包括来自第一个所述氢化区(36或11)的气流。 在第二阶段操作中,反应器(11,36)的作用被切换,使得先前处于再活化状态的区域(36或11)变为活性区域,而先前有活性的区域(11或36)进入再活化 条件和其部分失活的催化剂装料通过含氢气的气流再活化。

    Organoclay triphase catalysts
    45.
    发明授权
    Organoclay triphase catalysts 失效
    有机粘土三相催化剂

    公开(公告)号:US5099054A

    公开(公告)日:1992-03-24

    申请号:US656129

    申请日:1991-02-14

    Abstract: In a method of carrying out organic conversions via heterogeneous phase transfer catalysis by contacting immiscible liquid phases containing respective substances capable of interacting, with a solid catalyst to promote the transfer of reactive species from one liquid phase to another, the improvement comprises employing as catalyst a cation exchanged form of a 2:1 layered silicate clay with layer charge densities in the range of above 0.4 to 2.0 containing an onium ion containing one or more alkyl hydrocarbon chains and maintaining the materials in emulsified form by having a sufficient chain length of an alkyl group relative to the charge density of the clay.

    Abstract translation: 在通过使包含能够相互作用的各物质的不混溶液相与固体催化剂接触以促进反应物质从一个液相转移到另一个液相的途径通过非均相转移催化进行有机转化的方法中,改进包括采用催化剂 阳离子交换形式的2:1层状硅酸盐粘土,层电荷密度在0.4至2.0以上,含有含有一个或多个烷基烃链的鎓离子,并通过具有足够的烷基链长度将该材料保持乳化形式 组相对于粘土的电荷密度。

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