利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

67 条记录 (耗时 0.037 秒)

    PROCESS FOR THE DISSOCIATION OF MTBE
    61.
    发明申请
    PROCESS FOR THE DISSOCIATION OF MTBE 有权
    MTBE分解方法

    公开(公告)号：US20080058575A1

    公开(公告)日：2008-03-06

    申请号：US11838340

    申请日：2007-08-14

    申请人： Markus Winterberg ,  Walter Luh ,  Silvia Santiago Fernandez ,  Franz Nierlich ,  Stephan Houbrechts ,  Dietrich Maschmeyer ,  Horst-Werner Zanthoff ,  Wilfried Buschken

    发明人： Markus Winterberg ,  Walter Luh ,  Silvia Santiago Fernandez ,  Franz Nierlich ,  Stephan Houbrechts ,  Dietrich Maschmeyer ,  Horst-Werner Zanthoff ,  Wilfried Buschken

    IPC分类号： C07C1/20

    CPC分类号： C07C1/20 ,  C07C29/80 ,  C07C41/42 ,  Y02P20/127 ,  C07C11/09 ,  C07C31/04 ,  C07C43/04

    摘要： Isobutene is prepared by dissociation of MTBE in the gas phase, by a) fractional distillation of an MTBE-containing stream comprising feed MTBE (I) and a recycle stream (VIII) to give an MTBE-containing overhead stream (II) and a bottom stream (III) having a boiling point higher than MTBE, b) catalytic dissociation of the overhead stream (II) obtained in step a) to give a dissociation product (IV), c) separation by distillation of the dissociation product (IV) obtained in step b) into an overhead stream (V) comprising more than 90% by mass of isobutene and a bottom stream (VI) comprising diisobutene, MTBE and more than 50% of the methanol present in the dissociation product (IV), d) fractional distillation of the bottom stream obtained in step c) under conditions under which the methanol is obtained as bottom product (VII) and more than 99% of the MTBE is obtained in the overhead product (VIII), and e) recirculation of the overhead product (VIII) to step a).

    摘要翻译： 通过a）分馏含有进料MTBE（I）和再循环物流（VIII）的含MTBE的物流，得到含MTBE的塔顶馏出物流（II）和底部 沸点高于MTBE的流（III），b）步骤a）中获得的塔顶馏出物流（II）的催化解离，得到解离产物（IV），c）通过蒸馏分离获得的解离产物（IV） 在步骤b）中进入包含大于90质量％的异丁烯的塔顶物流（V）和包含二异丁烯，MTBE和存在于解离产物（IV）中的甲醇的50％以上的底部物流（VI），d） 在塔顶馏出物（VIII）中获得步骤c）中获得的底部物流的分馏，其中获得作为底部产物（VII）的甲醇和高于99％的MTBE的馏分，和e）塔顶馏出物的再循环 产物（VIII）至步骤a）。

    Catalyst for preparing bis-para-aminocyclohexylmethane containing a low proportion of trans/trans isomer by hydrogenation of methylenedianiline
    67.
    发明授权
    Catalyst for preparing bis-para-aminocyclohexylmethane containing a low proportion of trans/trans isomer by hydrogenation of methylenedianiline 失效
    通过甲基二苯胺的氢化制备含有低比例反式/反式异构体的双对氨基环己基甲烷的催化剂

    公开(公告)号：US5578546A

    公开(公告)日：1996-11-26

    申请号：US285527

    申请日：1994-08-04

    申请人： Dietrich Maschmeyer ,  Gerhard Thelen

    发明人： Dietrich Maschmeyer ,  Gerhard Thelen

    IPC分类号： B01J21/16 ,  B01J23/46 ,  B01J23/63 ,  B01J23/89 ,  C07B61/00 ,  C07C209/72 ,  C07C211/36

    CPC分类号： C07C209/72 ,  B01J21/16 ,  B01J23/46

    摘要： A catalyst for preparing bis-para-aminocyclohexylmethane by hydrogenation of methylenedianiline, comprising ruthenium or rhodium in an amount of from 0.05 to 8% by weight, applied in a layer thickness of from 5 to 150 .mu.m to a support comprising a calcined and surface-rehydrated transition alumina, wherein a suspension of 10 g of the transition alumina in 300 ml of water at 25.degree. C. has an equilibrium pH of at least 8.2 after 60 minutes and after addition of 10 ml of 0.1N hydrochloric acid to this suspension it has a pH of at least 6.0 after 30 minutes.

    摘要翻译： 用于通过氢化亚甲基二苯胺制备双对氨基环己基甲烷的催化剂，其包含0.05至8重量％的钌或铑以5至150μm的层厚施加至包含煅烧和表面的载体 - 水合过渡氧化铝，其中在25℃下将10g过渡氧化铝在300ml水中的悬浮液在60分钟后的平衡pH至少为8.2，并在向该悬浮液中加入10ml的0.1N盐酸 30分钟后pH值至少为6.0。