Ethylene glycol is prepared by a process in which ethylene oxide is extracted from an aqueous solution with near-critical or super-critical carbon dioxide. Thereafter an ethylene oxide-carbon dioxide-water mixture is contacted with a catalyst to form ethylene carbonate, which is then hydrolyzed to ethylene glycol in the presence of the same catalyst. The ethylene glycol is separated as product and the carbon dioxide and the catalyst are recycled.
申请公布号
DE3321448(A1)
申请公布日期
1983.12.15
申请号
DE19833321448
申请日期
1983.06.14
申请人
THE HALCON SD GROUP, INC., 10016 NEW YORK, N.Y., US