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Development of deNOx Catalyst Based on Ag/Al2O3 Catalyst for Diesel Applications

2002; Linguagem: Inglês

10.4271/2002-01-1724

2688-3627

K. Nagashima, Makoto Nagata, Katsuaki Katou, Kengo Sod, Masashi Sugiyama,

Catalysis and Hydrodesulfurization Studies

Abstract Ag/Al2O3 was studied as a HC-SCR (Hydrocarbon-Selective Catalytic Reduction)_catalyst for diesel application [1–2]. Performance requirement of this catalyst is high NOx conversion with high thermal durability and sulfur resistance. The Ag/Al2O3 system was improved by addition of additives. To study the improvement effect, the interactions between the HC-SCR and the catalysts were investigated by TG/DTA. DTA measurement results showed that HC/O2 reaction was restrained in the improved catalyst. This result suggests that there was sufficient HC (diesel fuel) for NOx reduction on the improved catalyst.