利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

146 条记录 (耗时 0.023 秒)

    Method for regenerating a zeolitic catalyst
    6.
    发明授权
    Method for regenerating a zeolitic catalyst 有权
    再生沸石催化剂的方法

    公开(公告)号：US06380119B1

    公开(公告)日：2002-04-30

    申请号：US09424854

    申请日：2000-01-13

    申请人： Georg Heinrich Grosch ,  Ulrich Müller ,  Andreas Walch ,  Norbert Rieber ,  Wolfgang Harder

    发明人： Georg Heinrich Grosch ,  Ulrich Müller ,  Andreas Walch ,  Norbert Rieber ,  Wolfgang Harder

    IPC分类号： B01J2990

    CPC分类号： B01J29/90 ,  B01J38/20 ,  C07B41/00 ,  C07D301/12 ,  Y02P20/584

    摘要： A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from 0.1 to 4% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof, and (III) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from more than 4 to 100% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof.

    摘要翻译： 再生沸石催化剂的方法包括以下步骤：（I）在含有少于2体积％氧气的气氛中将部分或完全失活的催化剂加热至250-600℃，（II）将催化剂处理 250至800℃，优选350至600℃，含有0.1至4体积％的供氧物质或氧气或其两种或多种的混合物的气流和 （III）在250至800℃，优选350至600℃下处理催化剂，其中气流含有超过4至100体积％的供氧物质或氧气或 其两种或更多种的混合物。

    Process for preparing polytetrahydrofuran
    10.
    发明授权
    Process for preparing polytetrahydrofuran 失效
    制备聚四氢呋喃的方法

    公开(公告)号：US06211401B1

    公开(公告)日：2001-04-03

    申请号：US09308320

    申请日：1999-05-19

    申请人： Karsten Eller ,  Christoph Sigwart ,  Rainer Becker ,  Klaus-Dieter Plitzko ,  Rolf Fischer ,  Frank Stein ,  Ulrich Müller ,  Michael Hesse

    发明人： Karsten Eller ,  Christoph Sigwart ,  Rainer Becker ,  Klaus-Dieter Plitzko ,  Rolf Fischer ,  Frank Stein ,  Ulrich Müller ,  Michael Hesse

    IPC分类号： C07C6724

    CPC分类号： C08G65/2693 ,  B01J23/24 ,  C08G65/20

    摘要： Polytetrahydrofuran, tetrahydrofuran copolymers, diesters or monoesters of these polymers are prepared by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer on a heterogeneous carrier catalyst which contains on an oxidic carrier material as active mass a catalytically active amount of at least one oxygenous molybdenum and/or tungsten compound and, when the precursor compounds of the active mass have been applied to the carrier material precursor, has been calcined at temperatures of between 500° C. and 1000° C. The catalyst used contains a promotor which comprises at least one element or a compound of an element of the 2nd, 3rd including the lanthanides, 5th, 6th, 7th, 8th or 14th group of the periodic system of elements.

    摘要翻译： 这些聚合物的四氢呋喃共聚物，二酯或单酯通过在至少一种前体和/或共聚单体存在下在非均相载体催化剂的存在下聚合四氢呋喃来制备，所述非均相载体催化剂在氧化载体材料上作为活性物质至少具有催化活性量 一种氧钼和/或钨化合物，并且当将活性物质的前体化合物已经施加到载体材料前体时，已经在500℃和1000℃之间的温度下煅烧。所使用的催化剂包含一种促进剂， 包括至少一种元素或元素的化合物，其包括元素周期性系统的镧系元素，第5，第6，第7，第8或第14组的第2,3族元素。