Heterogeneous Ruthenium Catalyst and Method For Hydrogenating a Carboxylic Aromatic Group, in Particular For Producing Core Hydrogenated Bisglycidyl Ether Bisphenols A and F

摘要

Heterogeneous ruthenium catalyst which comprises amorphous silicon dioxide as support material and can be produced by single or multiple impregnation of the support material with a solution of a ruthenium salt, drying and reduction, wherein the silicon dioxide support material used has a BET surface area (in accordance with DIN 66131) in the range from 250 to 400 m²/g, a pore volume (in accordance with DIN 66134) in the range from 0.7 to 1.1 ml/g and a pore diameter (in accordance with DIN 66134) in the range from 6 to 12 nm, and process for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic group, in particular a process for preparing a bisglycidyl ether of the formula I where R is CH₃ or H, by ring hydrogenation of the corresponding aromatic bisglycidyl ether of the formula II in which the abovementioned heterogeneous ruthenium catalyst is used.