화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2011년 가을 (10/26 ~ 10/28, 송도컨벤시아)
권호 17권 2호, p.2162
발표분야 Global Frontiers in Catalysis and Adsorption
제목 Environmentally-benign Selective Catalytic Reduction of NOx by Hydrocarbons
초록 Environmentally-benign catalysts for SCR reaction are requisite to be developed urgently for NOx removal from mobile sources. We recently developed new SCR catalysts, including FeTiOx, CeTiOx and CeWOx for NH3-SCR and Ag/Al2O3 for HC-SCR. These catalysts are potential substitutes for vanadium based catalyst to be utilized for NOx removal from diesel engines exhaust. In this report, our resent research works on the HC-SCR of NOx by hydrocarbons over Ag/Al2O3 were briefly reviewed. The NOx reduction by butyl alcohol isomers confirms that the formation of enolic species plays a crucial role in the NOx reduction by alcohols over Ag/Al2O3, which also provides an intrinsic criterion for the selection of reductants with high efficiency for NOx reduction over Ag/Al2O3. Using the precipitable silver compounds greatly facilitates the preparation of monolith catalyst for practical usage. The activity of Ag+ in various silver precipitable compound catalysts supported on Al2O3 for the SCR of NOx has been confirmed using both powder and washcoated honeycomb catalysts. In fact, the high DeNOx performance of the AgCl/Al2O3 honeycomb catalyst was confirmed by bench test of heavy duty diesel engine.
저자 Hong He
소속 Chinese Academy of Sciences
키워드
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