Journal ArticleDOI
Selective catalytic reduction of nitric oxide by hydrocarbons
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TLDR
In this paper, the performance of different base and noble metal exchanged zeolites, as well as supported noble metals appear to be the most active catalysts for this family of reactions.Abstract:
There are several problems related to the application of currently available NO x control technologies (i.e. three-way catalysts and the selective catalytic reduction of NO by NH 3 ) to lean burn diesel engines, and thus a very significant market potential exists for an improved technology in this area. As a result, the selective catalytic reduction of NO by hydrocarbons derived from on board fuel has received a lot of attention in the past five years. Different forms of base and noble metal exchanged zeolites, as well as supported noble metals appear to be the most active catalysts for this family of reactions. The available literature in this area is summarized in this review, with emphasis placed on the performance of different zeolite and supported noble metal catalysts, the effect of the various exhaust gas components and the mechanistic implications.read more
Citations
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Automotive catalytic converters: current status and some perspectives
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A review of the selective reduction of NOx, with hydrocarbons under lean-burn conditions with non-zeolitic oxide and platinum group metal catalysts
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Activity and durability of Fe/ZSM-5 catalysts for lean burn NOx reduction in the presence of water vapor
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References
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Journal ArticleDOI
Removal of nitrogen monoxide from exhaust gases through novel catalytic processes
Masakazu Iwamoto,Hamada Hideaki +1 more
TL;DR: In this paper, the present position of decomposition catalysts is mentioned and the catalytic performance of copper ion-exchanged zeolites and Ag-Co3O4 oxides is summarized based on the respective authors' results.
Journal ArticleDOI
Removal of nitrogen monoxide through a novel catalytic process. 1. Decomposition on excessively copper-ion-exchanged ZSM-5 zeolites
TL;DR: In this paper, the number of copper ions that can adsorb NO molecules has been determined by a temperature-programmed desorption technique combined with IR measurement; 94% of Cu{sup 2+} ions in ZSM-5 were active for the adsorption.
Journal ArticleDOI
Mechanism of the selective reduction of nitrogen monoxide on platinum-based catalysts in the presence of excess oxygen
TL;DR: A range of alumina-supported platinum catalysts have been prepared and investigated for the selective reduction of nitrogen monoxide in the presence of a large excess of oxygen in steady state microreactor experiments.
Journal ArticleDOI
Catalytic reduction of nitrogen oxides with methane in the presence of excess oxygen
Yuejin Li,John Nelson Armor +1 more
TL;DR: In this paper, a family of catalysts that can effectively reduce NOx with methane in the presence of excess oxygen was discovered, and the reduction of nitric oxide was obtained at 400°C over a Co-ZSM-5 catalyst.