Реферат: The potential of gold as a component of Three-Way Catalysts (TWC), in particular for improving cold start and idling performance has been studied. Monometallic Au catalysts have shown excellent potential for oxidation reactions in the three-way catalysis model feed. Superior reactivity was observed on reducible supports in moist feed. Propene, used to simulate unburned hydrocarbons, was identified as poisoning agent for both, CO oxidation and NO reduction. Activity towards the latter was minor on monometallic Au catalysts but became sufficient upon combination with Pd. Bimetallic AuPd NPs can convert all pollutants, although the light-off temperatures are strongly influenced by the metal ratio and by the nature of the support. The advanced impact of Au on the bimetallic NPs was observed in the more selective reduction of NO and the assisted activity for oxidation reactions.

Библиографическая ссылка: Ulrich V. , Moroz B.L. , Pyrjaev P.A. , Sinev I. , Cuenya B.R. , Bukhtiyarov V.I. , Grünert W.
Supported Mono- and Bimetallic Au Catalysts for Three-Way Catalysis - Influence of Support Properties, Water Content in Feed and Metal Ratio
EuropaCat-XIII: 13th European Congress on Catalysis 27-31 Aug 2017