The invention provides a process for the preparation of an alkylene glycol from an alkylene oxide. Alkylene oxide reacts with carbon dioxide in the presence of a carboxylation catalyst to provide alkylene carbonate; alkylene carbonate reacts with water in the presence of a hydrolysis catalyst to provide alkylene glycol. An initial charge of the carboxylation catalyst and an initial charge of the hydrolysis catalyst are added, the degradation and activity of the hydrolysis catalyst are monitored, and when the activity of the hydrolysis catalyst has fallen below a minimum level, an additional charge of the hydrolysis catalyst is added.
申请公布号
WO2009124988(A1)
申请公布日期
2009.10.15
申请号
WO2009EP54270
申请日期
2009.04.08
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;VAN KRUCHTEN, EUGENE, MARIE, GODFRIED, ANDRE;SMAARDIJK, ABRAHAM, ADRIAAN;STICHTER, HENDRIK
发明人
VAN KRUCHTEN, EUGENE, MARIE, GODFRIED, ANDRE;SMAARDIJK, ABRAHAM, ADRIAAN;STICHTER, HENDRIK