| 摘要 |
PURPOSE:To obtain an alkoxylation catalyst capable of producing a product having narrow molar distribution of added alkylene oxide by producing an alkoxylation catalyst contg. at least one kind of metal ion selected from Al<3+>, Ga<3+>, In<3+>, Tl<3+>, etc., in MgO. CONSTITUTION:An aq. soln. of nitrate or carbonate of at least one kind of metal selected from Al<3+>, Ga<3+>, In<3+>, Tl<3+>, Co<3+>, Sc<3+>, La<3+>, and Mn<+2> is prepd. After impregnating the aq. soln. of the metal salt into MgO having >=99% purity, the impregnated product is calcined at 400-1000 deg.C, pref. 500-800 deg.C in N2 stream or in vacuum. Thus, an alkoxylation catalyst to be used for the reaction of an org. compd. having an active H with alkoxylene oxide is produced. The amt. of Al<3+> to be carried on MgO in the obtd. catalyst is pref. 0.1-30wt.%, more pref. 0.5-20wt.% basing on the weight of the catalyst. |
