| 摘要 |
PURPOSE:To readily obtain the aimed compound, by catalytically dehydrogenating ethylene glycol in the presence of a catalyst containing silver, copper or/and an oxide thereof and a compound of silicon, phosphorus or/and boron to produce the titled compound. CONSTITUTION:Ethylene glycol is catalytically dehydrogenated in the presence of a catalyst, containing (a) silver, copper, silver oxide or/and copper oxide and (b) one or more compounds selected from silicon, phosphorus or boron and preferably >=50wt%, based on the catalyst weight except the component (a), total weight of the component (b) normally at 200-450 deg.C, preferably 270-380 deg.C to give glycolaldehyde useful as an intermediate for amino acids or medicines, etc., in high selectivity. This method has no problems, e.g. complication of raw material preparation, separation of heterogeneous system noble metal catalyst or troublesome separating operation of raw material formalin, etc. |
