Mn and Si-containing catalyst for hydrating cyanohydrin

摘要

A catalyst for hydrating cyanohydrin, comprising a manganese oxide as a main component and a silicon compound. The mechanical strength of the manganese oxide conventionally known as a catalyst for hydrating a cyanohydrin is improved by adding the silicon compound. The mechanical strength can be improved without reducing the catalytic activity, when the silicon compound is added at any stage before separating the manganese oxide from a suspension containing it.