Patent ID: 6551958
Filing Date: 2003-04-22
Classification: B01J,C07C,Y02P

Abstract:
A catalyst comprising iron oxide, potassium oxide, a magnesium compound, a calcium compound and a cerium compound, wherein the catalyst has one or more Fe/K phases K2O.Fe2O3 in a ratio of K2O to Fe2O3 of 1:n, where n is a natural number from 1 to 11, has a mean pore diameter of greater than 0.35 &mgr;m and comprises50-90% by weight of iron, calculated as Fe2O3, 1-40% by weight of potassium, calculated as K2O, 5-20% by weight of cerium, calculated as Ce2O3, 0.1-10% by weight of magnesium, calculated as MgO and 1-10% by weight of calcium, calculated as CaO wherein the catalyst is produced by preparing a catalyst molding from &agr;-Fe2O3 having a mean particle dimension of greater than 0.3 &mgr;m, a potassium compound, a magnesium compound, a cerium compound and the obtained molding is calcined at temperatures above 750Â° C.