Patent ID: 6875723

Claim:
A process for the production of a mixed oxide catalyst with iron oxide and metal oxides selected from one or more of the oxides of Co, Al, Ni, Zn, Cu and Cr, the process comprising the steps of: (a) providing a nitric acid solution with iron nitrate and a nitrate of one or more metals of Co, Al, Ni, Zn, Cu and Cr; (b) adding to the nitric acid solution a carbohydrate, an amino acid and/or a carboxylic acid; (c) decomposing the solution obtained in step (b) at a temperature of between 250 and 700° C. with free air supply to obtain the mixed oxide catalyst containing the iron oxide in its alpha and or gamma form; and adding one or more promoters in the form of PR(NO 3 ) x to the acid solution of step (a), where PR is chosen from Na, K, Cs, Mg, Ca, Ba, Sr and Rb.