Enhancement of hydrothermal stability of Co-Mordenite for the SCR of NOx by the addition of lanthanum

L.B. GUTIERREZ, L.M. CORNAGLIA, E.A. LOMBARDO

Seoul, Korea

Congreso; 14th International Congress on Catalysis; 2008

 Monometallic and bimetallic La and Co exchanged H-mordenites were obtained by ion exchange and pretreated in different ways. The SCR of NOx with CH4 (10% H2O) at 500ºC was monitored during 400 h on stream. The hydrothermal stability was strongly affected by the exchange order and the pretreatment conditions. The best formulation was not affected by this severe test. Monometallic and bimetallic La and Co exchanged H-mordenites were obtained by ion exchange and pretreated in different ways. The SCR of NOx with CH4 (10% H2O) at 500ºC was monitored during 400 h on stream. The hydrothermal stability was strongly affected by the exchange order and the pretreatment conditions. The best formulation was not affected by this severe test.