Abstract: Carrier-supported catalyst on the basis of transition metals for the removal of nitrogen oxides, carbon monoxide and/or organic compounds from exhaust gases, which can be produced by one of: combination a), combination b), combination c) where (a) comprises charging of a carrier with at least one metal complex compound with a plane or nearly plane conformation, and activation of the charged carrier with (i) a gas mixture which contains nitrogen oxide and/or oxygen, at temperatures between room temperature and 500.degree. C., or with (ii) a solution which contains nitric acid and/or an oxidation agent, or (b) comprises charging of a carrier with at least one transition metal oxide or transition metal carbonate, and treatment of the charged carrier with an oxidizing gas mixture, which contains free ligands capable of complex formation, at temperatures between room temperature and 500.degree. C.

Abstract: Process of manufacture, and method of use of a carrier-supported catalyst with transition metal phthalocyanines for the oxidizing treatment of exhaust gases which gases contain volatile compounds containing oxygen and/or nitrogen, which catalyst can be obtained by charging a carrier with at least one transition metal phthalocyanine and activation of the charged carrier with (i) a gas mixture which contains nitrogen oxide and/or oxygen, at temperatures between room temperature and 500.degree. C., or with (ii) a solution which contains nitric acid and/or an oxidation agent.

Abstract: A catalyst for removing nitrogen oxides, carbon monoxide, and residual hydrocarbons from exhaust gases is made with the use of technical metal phthalocyanines and a carrier onto or into which the metal phthalocyanines are applied, whereupon the system composed of the carrier and metal phthalocyanines is treated, at temperatures above 120.degree. C., with nitrogen oxides and/or mixtures of nitrogen oxide and carbon monoxide and/or with oxygen and/or mixtures of oxygen and carbon monoxide or with nitrating or oxidizing solutions. Instead of activating by nitrating or oxidizing gases or solutions, the activation also may be effected by intimate mixing of metal oxide and metal phthalocyanine on and in a carrier.