| 摘要 |
Method for applying a coating to a monolithic substrate comprises application of the coating following pre-impregnation of the substrate with a gelating reagent. Catalysts contg. coatings prepd. by th method are also claimed. The reagent pref. comprises (in)organic bases, e.g. ammonium or alkyl amines. The substrate pref. comprises cordierite, mullite, iron, aluminium oxide, magnesium aluminate, titanium aluminate, silica, aluminium silicate, zirconium dioxide or titanium dioxide. The coating pref. contains noble metals, e.g. platinum, palladium, rhodium, rhenium, indium or ruthenium, or transition metals such as copper, cobalt, silver, lanthanum, cerium, iron, manganese, chromium or molybdenum. |
