Overview on the selective lean NO
x
reduction by hydrocarbons over Pt-based catalysts |
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| Authors: | Zhiming Liu Kwang Seok Oh Seong Ihl Woo |
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| Institution: | (1) Department of Chemical and Biomolecular Engineering, Center for Ultramicrochemical Process Systems, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea |
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| Abstract: | Selective catalytic reduction of NO
x
with hydrocarbons (HC-SCR) has received much attention as one of potential technologies for reducing NO
x
emissions under lean-burn conditions. Pt/ZSM-5 prepared by sublimation method and Pt/V/MCM-41 catalysts have been introduced for the wider activity temperature window than those Pt catalysts reported previously. The influence of pre-treatment, oxygen concentration, water and SO2 on the activities of Pt-based catalysts has been discussed. Combinatorial catalysis, which has been developed recently for discovering the practical HC-SCR catalysts quickly, has been introduced too. Finally, the reaction mechanism of HC-SCR over Pt-based catalysts has been briefly discussed. |
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| Keywords: | selective catalytic reduction NO x lean-burn conditions activity temperature window combinatorial catalysis |
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