Universiteit Antwerpen

Tamara Oroz Mateo

Vera Meynen

Pegie Cool

Luis Martinez De Morentin Osaba

Cristina Salazar Castro

Qi Xin

Claudio Fernández Acevedo

Jessica Fabro

Paolo Canu

A process for the production of a catalyst comprising the steps of: dissolving the requisite quantities of copper nitrate and nickel nitrate in de-ionised water to provide a sub-0.30 molar aqueous solution of copper nitrate and nickel nitrate together in the ratio required; providing an ammoniacal solution by adding concentrated aqueous solution of ammonia in a quantity equal to between six and ten times the quantity required to realise both a 1:6 molar ratio for Cuto ammonia and a 1:6 molar ratio for Nito ammonia; loading gamma alumina with 1 to 30% w/w of copper and nickel in a weight ratio of nickel to copper of 1:5 to 2:1 by suspending the requisite quantity of gamma alumina in said ammoniacal solution to achieve the required loading of copper and nickel; stirring the resulting gamma alumina suspension for at least 4 h at room temperature; then the volatile components evaporate under ambient conditions leaving dry loaded gamma alumina, which is calcined at a temperature of at least 260° C. for at least 30 min with a constant heating up rate; a catalyst or catalyst mixture, the catalyst or each catalyst in the catalyst mixture being obtainable by the above-mentioned process; and the use of the catalyst or catalyst mixture for the conversion of exhaust gases from an internal combustion engine into carbon dioxide, water and nitrogen.

Ammonia deposition precipitation process for producing a copper-nickel/gamma-alumina catalyst, said catalyst and its use in the conversion of exhaust gases

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Fuenmayor, Spain

Tamara Oroz Mateo