F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
23/342
F01N 3/10 (2006.01) B01D 53/94 (2006.01) B01J 23/10 (2006.01) B01J 37/00 (2006.01)
Patent
CA 1065123
PROCESS FOR THE OXIDATION OF CARBON MONOXIDE AND HYDROCARBONS. ABSTRACT OF THE DISCLOSURE: Carbon monoxide and hydrocarbons contained in exhaust gas of internal combustion engines are oxidized with oxygen- containing gas to carbon dioxide and water. The oxidation is effected at 150-800°C in contact with a carrier-supported catalyst, wherein alumina partially converted to .alpha.-Al2O3 is the carrier and cerium in oxide form is the catalytically active ingredient, the catalytically active ingredient constituting 0.2 to 10 weight % of the carrier being depo- sited thereon, The oxidation is more particularly carried out in contact with a carrier-supported catalyst being produced by compressing hydrous alumina or unstable anhydrous alumina into shapes; annealing the shapes for 10 - 20 hours at 1000 - 1250°C; impregnating the annealed shapes with an aqueous solution of a cerium salt of a readily decomposable acid; drying the cerium salt so applied to the shapes at 130 - 150°C; de- composing the dry cerium salt by gradually heating the shapes to temperatures within the range 200 and 300°C and 450 and 550°C, respectively; and annealing the resulting shapes containing cerium oxide at 700 - 900°C.
222637
Dyrschka Helmut
Glaser Hermann
Vogt Wilhelm
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