Pentene isomerization process
    32.
    发明授权
    Pentene isomerization process 失效
    戊烯异构化过程

    公开(公告)号:US5367101A

    公开(公告)日:1994-11-22

    申请号:US995455

    申请日:1992-12-22

    摘要: An improved process is disclosed for the isomerization of pentenes in the absence of hydrogen using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain methyl t-amyl ether, which enjoy high current interest as components for reformulated gasoline. Pentenes in raffinate from etherification may be returned to the isomerization process.

    摘要翻译: 公开了使用包含非沸石分子筛的催化剂在不存在氢的情况下使戊烯异构化的改进方法。 特别值得注意的是,产品中含有叔碳的烯烃的比例增加,形成不希望的副产物。 可以进一步处理产物烯烃以获得作为重整汽油的组分享有高电流兴趣的甲基叔戊基醚。 来自醚化的残液中的Pentenes可以返回到异构化过程。

    Methanol conversion processes using syocatalysts
    33.
    发明授权
    Methanol conversion processes using syocatalysts 失效
    使用合成催化剂的甲醇转化方法

    公开(公告)号:US5233117A

    公开(公告)日:1993-08-03

    申请号:US878114

    申请日:1992-05-04

    申请人: Paul T. Barger

    发明人: Paul T. Barger

    IPC分类号: B01J29/85 C07C1/20

    摘要: Hydrothermal treatment of silicoaluminophosphate molecular-sieves at temperatures in excess of about 700.degree. C. for periods sufficient to destroy a large proportion of their acid sites while retaining at least 80 percent of their crystallinity is found to result in a catalyst for converting methanol to lower olefins having increased catalyst life, increased selectivity for C.sub.2 -C.sub.3 olefins and decreased selectivity for paraffin production than the untreated SAPO-n starting composition.

    摘要翻译: 在超过约700℃的温度下对硅铝磷酸盐分子筛进行水热处理,足以破坏其大部分酸性位点同时保持其至少80%的结晶度的时间,得到用于将甲醇转化为更低的催化剂 与未处理的SAPO-n起始组合物相比,具有增加的催化剂寿命的烯烃,对C2-C3烯烃的选择性增加和对石蜡生产的选择性降低。

    Alkylation of alkanes with mixtures of alkenes and alkyl halides
    37.
    发明授权
    Alkylation of alkanes with mixtures of alkenes and alkyl halides 失效
    用烯烃和烷基卤化物的混合物烷基化烷烃

    公开(公告)号:US6103947A

    公开(公告)日:2000-08-15

    申请号:US218321

    申请日:1998-12-22

    申请人: Paul T. Barger

    发明人: Paul T. Barger

    IPC分类号: C07C2/60 C07C2/86 C07C2/58

    摘要: Although alkenes commonly are used to alkylate alkanes using various solid acid catalysts, the process is severely hampered by short catalyst lifetimes attending substantial alkene oligomerization. This problem can be avoided by using an alkene-alkyl chloride mixture as the alkylating agent. Thus, alkylation of isobutane by a butyl chloride/butene mixture at a molar ratio of 1:3 in the presence of an AlCl.sub.3 -type Friedel-Crafts catalyst at 30.degree. C. maintains at least an 80% conversion of (alkene and alkyl chloride) for almost twice as long as is the case for a 1:19 molar ratio of butyl chloride/butene.

    摘要翻译: 虽然烯烃通常用于使用各种固体酸催化剂烷基化烷烃,但是由于催化剂寿命长短而引起大量烯烃低聚,该方法受到严重的阻碍。 通过使用烯烃 - 烷基氯混合物作为烷基化剂可以避免这个问题。 因此,在AlCl 3型Friedel-Crafts催化剂存在下,在30℃下,丁基氯/丁烯混合物以1:3的摩尔比烷基化异丁烷,维持(烯烃和烷基氯化物)至少80%的转化率 )为丁基氯/丁烯1:19摩尔比的情况几乎两倍。

    Two-stage process for producing diisopropyl ether using catalytic
distillation
    39.
    发明授权
    Two-stage process for producing diisopropyl ether using catalytic distillation 失效
    使用催化蒸馏生产二异丙醚的两阶段方法

    公开(公告)号:US5504258A

    公开(公告)日:1996-04-02

    申请号:US311993

    申请日:1994-09-26

    IPC分类号: C07C41/05 C07C41/42 C07C41/00

    摘要: A process for the efficient production of diisopropyl ether where catalytic distillation is used to increase the yield of product beyond thermodynamic equilibrium limitations has been developed. In a hydration zone the propylene in a feedstock is reacted with water in the presence of a catalyst to effect hydration to produce an effluent stream containing at least water, unreacted propylene, and isopropyl alcohol, and then, in an etherification zone, at least a portion of the effluent stream is further reacted by catalytic distillation in the presence of a catalyst to effect reaction of propylene and isopropyl alcohol to form diisopropyl ether while concurrently separating a propylene rich portion, a diisopropyl ether rich portion and an aqueous portion, and recovering the diisopropyl ether from the diisopropyl ether rich portion.

    摘要翻译: 已经开发了一种有效生产二异丙醚的方法,其中使用催化蒸馏来提高产物的产率超过热力学平衡限制。 在水合区中,原料中的丙烯在催化剂存在下与水反应以进行水合以产生至少含有水,未反应的丙烯和异丙醇的流出物流,然后在醚化区中至少 在催化剂存在下,通过催化蒸馏进一步反应出一部分流出物流,进行丙烯与异丙醇的反应,生成二异丙醚,同时分离富丙烯部分,富含二异丙醚的部分和水分,并回收 二异丙基醚。

    Olefin isomerization process
    40.
    发明授权
    Olefin isomerization process 失效
    烯烃异构化过程

    公开(公告)号:US5365008A

    公开(公告)日:1994-11-15

    申请号:US116190

    申请日:1993-09-03

    摘要: An improved process is disclosed for the isomerization of butenes and/or pentenes using a catalyst comprising a silicoaluminophosphate molecular sieve containing noncondensed silica. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain ethers, which enjoy high current interest as components for reformulated gasoline.

    摘要翻译: 公开了使用包含含有非缩水二氧化硅的硅铝磷酸盐分子筛的催化剂来异构化丁烯和/或戊烯的改进方法。 特别值得注意的是,产品中含有叔碳的烯烃的比例增加,形成不希望的副产物。 可以进一步处理产物烯烃以获得作为重整汽油的组分享有高电流兴趣的醚。