| abstract |
at. Denitration catalysts having a porous coating and a method for producing them. b. A denitration catalyst having a porous coating is produced by immersing a porous metal catalyst base in a coating bath containing silica, drying the catalyst base to form a support having a porous silica coating, dipping the catalyst base. support in a solution containing an active component and drying of the resulting support, to fix the active component on the support. vs. Purification of exhaust gases. |