CATALYST FOR ADDITION OF ALKYLENE OXIDE

摘要

PROBLEM TO BE SOLVED: To reduce by-products in a reaction product and to eliminate an operation for separating a catalyst from the product after a reaction by preparing the catalyst for the addition of alkylene oxides by mixing/molding hydrotalcites with a specified quantity of silica. SOLUTION: In the preparation of a catalyst for addition of alkylene oxides which are used as an intermediate of solvents, surfactants, and other chemical products, hydrotalcites are mixed with silica in an amount of 5-50 wt.% of hydrotalcites, and the mixture is molded. Compounds expressed by formula: MgxMy(OH)2(x+y)(An-)y/n.mH2O are named as hydrotalcites to be used. In the formula, M is a trivalent metal selected from Al3+, Sb3+, Fe3+ and others; An- is an anion selected from NO3-, Cl-, CO32-, SO32-, SO42-, CrO42- and others; x and y are positive numbers and 0.25