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A process for titanium silicate - catalyzed epoxidation

机译:硅酸钛催化环氧化的方法

摘要

PROBLEM TO BE SOLVED: To provide a method for increasing the selectivity of epoxide in an epoxidation of an olefin. ;SOLUTION: The selectivity of olefin epoxidation using titanium silicalite is improved by performing the epoxidation in the presence of a minor amount of a nonbasic salt such as lithium chloride, sodium nitrate, potassium sulfate, ammonium dihydrogen phosphate or the like. For example, when hydrogen peroxide is reacted with propylene to form propylene oxide, a non-selective ring-opening reaction of the propylene oxide is suppressed when the low concentration of the nonbasic salt is added to the hydrogen peroxide feed. Consequently the selectivity of epoxide can be significantly improved without exerting a bad influence on the conversion ratio of hydrogen peroxide.;COPYRIGHT: (C)1996,JPO
机译:要解决的问题:提供一种在烯烃环氧化中提高环氧化物选择性的方法。 ;解决方案:通过在少量非碱性盐(例如氯化锂,硝酸钠,硫酸钾,磷酸二氢铵等)的存在下进行环氧化,可以提高使用钛硅沸石的烯烃环氧化的选择性。例如,当过氧化氢与丙烯反应形成环氧丙烷时,当向过氧化氢进料中加入低浓度的非碱性盐时,可抑制环氧丙烷的非选择性开环反应。因此,在不影响过氧化氢的转化率的情况下,可以显着提高环氧化物的选择性。; COPYRIGHT:(C)1996,JPO

著录项

  • 公开/公告号DE69520025T2

    专利类型

  • 公开/公告日2001-07-19

    原文格式PDF

  • 申请/专利权人 ARCO CHEMICAL TECHNOLOGY L.P.;

    申请/专利号DE1995620025T

  • 发明设计人 ZAJACEK JOHN G.;CROCCO GUY L.;

    申请日1995-11-14

  • 分类号C07D301/12;

  • 国家 DE

  • 入库时间 2022-08-22 01:08:30

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