Patent ID: 6888011
Filing Date: 2005-05-03
Classification: B01J,C07D

Abstract:
1. The method of using a substantially chromium free hydrogenation catalyst comprising copper oxide and at least one further metal or compound thereof, selected from the group consisting of Al, Si, Zn, La, Ce, the elements of groups IIIA to VIIIA and the elements of groups IA and IIA and having a pore volume of ≧0.01 ml/g for pore diameters of >50 nm and a ratio of the pore volume of macropores having a diameter of >50 nm to the total pore volume for pores having a diameter of >4 nm of >10%, in the hydrogenation of C 4 -dicarboxylic acids or their derivatives in the gas phase to form THF or its derivatives.