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51 条记录 (耗时 0.023 秒)

    Preparation of a silver catalyst
    2.
    发明授权
    Preparation of a silver catalyst 失效
    银催化剂的制备

    公开(公告)号：US5011809A

    公开(公告)日：1991-04-30

    申请号：US471544

    申请日：1990-01-29

    申请人： Klaus Herzog ,  Karl-Heinz Boehning ,  Heinrich Aichinger ,  Juergen Plueckhan ,  Wolf D. Mross ,  Matthias Schwarzmann

    发明人： Klaus Herzog ,  Karl-Heinz Boehning ,  Heinrich Aichinger ,  Juergen Plueckhan ,  Wolf D. Mross ,  Matthias Schwarzmann

    IPC分类号： B01J23/66 ,  B01J37/02 ,  C07D301/10

    CPC分类号： B01J23/66 ,  B01J37/0201 ,  C07D301/10

    摘要： Supported silver catalysts which contain one or more alkali metals are prepared in a two-stage process by doping a basic catalyst which contains silver in metallic form and may also contain lithium with the heavy alkali metal sodium, potassium, rubidium and/or cesium using an impregnating solution which contains the heavy alkali metal and one or more nitrates of the general formulaR.sup.+ NO.sub.3.sup.-wherein R.sup.+ is an ammonium, hydrazinium, C.sub.1 -C.sub.12 -monoalkylammonium, C.sub.2 -C.sub.12 -dialkylammonium, C.sub.3 -C.sub.12 -trialkylammonium or C.sub.4 -C.sub.12 -tetraalkylammonium cation.

    摘要翻译： 含有一种或多种碱金属的负载型银催化剂通过掺杂含有金属形式的银的碱性催化剂并且还可以使用重质碱金属钠，钾，铷和/或铯来包含锂，通过两步法制备。 含有重质碱金属和一种或多种通式为R + NO 3 - 的硝酸盐的浸渍溶液，其中R +是铵，肼，C1-C12-单烷基铵，C2-C12-二烷基铵，C3-C12-三烷基铵或C4-C12 四烷基铵阳离子。

    Catalyst for the manufacture of ethylene oxide
    5.
    发明授权
    Catalyst for the manufacture of ethylene oxide 失效
    用于制造环氧乙烷的催化剂

    公开(公告)号：US4212772A

    公开(公告)日：1980-07-15

    申请号：US31039

    申请日：1979-04-18

    申请人： Wolf D. Mross ,  Eckart Titzenthaler ,  Matthias Schwarzmann ,  Juergen Koopmann

    发明人： Wolf D. Mross ,  Eckart Titzenthaler ,  Matthias Schwarzmann ,  Juergen Koopmann

    IPC分类号： B01J23/66 ,  C07D301/10 ,  B01J23/04 ,  B01J23/50

    CPC分类号： C07D301/10 ,  B01J23/66

    摘要： A novel catalyst for the manufacture of ethylene oxide from ethylene by means of oxygen or air, comprising from 2 to 12% of silver on a conventional carrier, together with from 0.1 to 2 atom% (based on silver) of lithium and from 0.05 to 0.35 atom% of potassium or 0.003 to 0.25 atom% of rubidium or 0.0005 to 0.2 atom% of cesium or mixtures of potassium, rubidium and/or cesium in amounts exhibiting corresponding catalytic activity. The catalyst is advantageously obtained by heating a carrier which is impregnated with a silver complex compound.

    摘要翻译： 一种用于通过氧气或空气从乙烯生产环氧乙烷的新型催化剂，其在常规载体上含有2至12％的银，以及0.1至2原子％（基于银）的锂和0.05至 0.35原子％的钾或0.003至0.25原子％的铷或0.0005至0.2原子％的铯或钾，铷和/或铯的混合物，其量具有相应的催化活性。 催化剂有利地通过加热浸渍有银络合物的载体来获得。

    Preparation of olefins from methanol and/or dimethyl ether
    8.
    发明授权
    Preparation of olefins from methanol and/or dimethyl ether 失效
    从甲醇和/或二甲醚制备烯烃

    公开(公告)号：US4433188A

    公开(公告)日：1984-02-21

    申请号：US413814

    申请日：1982-09-01

    申请人： Wolfgang Hoelderich ,  Wolf D. Mross ,  Matthias Schwarzmann

    发明人： Wolfgang Hoelderich ,  Wolf D. Mross ,  Matthias Schwarzmann

    IPC分类号： C07C1/20

    CPC分类号： C07C1/20 ,  C07C2529/86 ,  Y02P20/52 ,  Y02P30/42

    摘要： A process for the preparation of lower olefins from methanol or dimethyl ether by catalytic conversion at from 300.degree. to 550.degree. C. in two stages over borosilicate zeolites, wherein C.sub.2 -C.sub.4 -olefins and C.sub.1 -C.sub.4 -paraffins are removed after the first reaction stage, the C.sub.5.sup.+ hydrocarbons are passed to the second reaction stage, the aromatics are removed from the reaction product of the second stage and the remaining reaction products are recycled. The advantage of this process is an improvement in the yield of olefins.

    摘要翻译： 一种从甲醇或二甲醚中制备低级烯烃的方法，通过在三相硼酸盐沸石中分三步骤催化转化，分三次反应，其中在第一次反应后除去C 2 -C 4 - 烯烃和C 1 -C 4 - 链烷烃 阶段，将C5 +烃送至第二反应阶段，将芳族化合物从第二阶段的反应产物中除去，剩余的反应产物被再循环。 该方法的优点是烯烃产率的提高。