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    • 8. 发明授权
    • Process and equipment for the production of ethylene glycols
    • 用于生产乙二醇的工艺和设备
    • US6137015A
    • 2000-10-24
    • US206888
    • 1998-12-08
    • Gary R. StricklerVon G. LandonGuo-shuh John LeeWilliam J. Rievert
    • Gary R. StricklerVon G. LandonGuo-shuh John LeeWilliam J. Rievert
    • B01J31/08C07B61/00C07C29/10C07C31/20C07C27/00
    • C07C29/106Y02P20/52
    • A process for preparing alkylene glycols including reacting an alkylene oxide with water in the presence of a combination of additives and an anion exchange resin, wherein the combination of additives comprises carbon dioxide and an organic or inorganic base provided in an amount sufficient to maintain a pH of the reaction mixture between about 5.0 and 9.0, with the proviso that, when the base is bicarbonate or carbonate, then the anion exchange resin is a trimethyl benzyl ammonium anion exchange resin. A particularly preferred method of this invention is to react ethylene oxide with water in the presence of a halogenate or bicarbonate-type anionic exchange resin (such as a DOWEX.TM. MSA-1 type resin), carbon dioxide, and sodium hydroxide. Some advantages of this invention are that it provides desirable catalyst lifetime and activity, minimizes resin swelling, and provides a desirable, sustained selectivity to alkylene glycol.
    • 一种制备亚烷基二醇的方法,包括在添加剂和阴离子交换树脂的组合的存在下使烯化氧与水反应,其中添加剂的组合包括二氧化碳和提供足够量以保持pH的有机或无机碱 的反应混合物为约5.0至9.0,条件是当碱为碳酸氢盐或碳酸盐时,阴离子交换树脂为三甲基苄基铵阴离子交换树脂。 本发明特别优选的方法是在卤化物或碳酸氢根离子交换树脂(如DOWEX TM MSA-1型树脂),二氧化碳和氢氧化钠的存在下使环氧乙烷与水反应。 本发明的一些优点是其提供所需的催化剂寿命和活性,使树脂溶胀最小化,并为亚烷基二醇提供期望的持续选择性。