利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

30 条记录 (耗时 0.014 秒)

    Preparation of C.sub.2 -C.sub.4 -olefins from methanol/dimethyl ether
    1.
    发明授权
    Preparation of C.sub.2 -C.sub.4 -olefins from methanol/dimethyl ether 失效
    从甲醇/二甲醚制备C 2 -C 4烯烃

    公开(公告)号：US4503281A

    公开(公告)日：1985-03-05

    申请号：US577762

    申请日：1984-02-07

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

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

    IPC分类号： B01J29/86 ,  C07C1/20

    CPC分类号： B01J29/86 ,  C07C1/20 ,  C07C2529/86 ,  Y02P30/42

    摘要： C.sub.2 -C.sub.4 -olefins are prepared by catalytic conversion of methanol and/or dimethyl ether in the presence of a zeolite catalyst at elevated temperatures, by a process in which the catalyst used is a pure borosilicate zeolite which has been tableted or extruded without a binder and treated with hydrofluoric acid and hydrochloric acid. The treatment of the catalyst with hydrofluoric acid is carried out using 0.001-1N HF, and that with hydrochloric acid is carried out using 3-25% strength acid. The time-on-stream of the catalyst is improved.

    摘要翻译： 通过在沸石催化剂存在下在高温下通过甲醇和/或二甲醚的催化转化制备C 2 -C 4 - 烯烃，其中使用的催化剂是纯硼硅酸盐沸石，其已被压片或挤出而没有粘合剂 并用氢氟酸和盐酸处理。 用氢氟酸处理催化剂使用0.001-1N HF进行催化剂，盐酸使用3-25％强度的酸进行。 提高了催化剂的时间流动性。

    Preparation of olefins from methanol and/or dimethyl ether
    5.
    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。

    Preparation of a silver catalyst
    9.
    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。