Patent ID: 6809215
Filing Date: 2004-10-26
Classification: B01J,C07C

Abstract:
A method for hydrogenation of an aromatic urethane, which contain one or more aromatic rings and one or more urethane groups bonded directly and/or indirectly to one aromatic ring or to different aromatic rings, by reacting the aromatic urethane with hydrogen in the presence of a supported catalyst, which contains as active metal, applied on a support, ruthenium alone or together with at least one metal of the subgroups of Groups I, VII or VIII of the Periodic Table, the proportion of active metal being 0.01 to 20 wt % relative to the supported catalyst, and wherein the catalyst support has a BET surface ranging from larger than 30 m2/g to smaller than 70 m2/g and more than 50% of the pore volume of the catalyst support is represented by macropores with a pore diameter of larger than 50 nm and less than 50% is represented by mesopores with a pore diameter of 2 to 50 nm.