Journal ArticleDOI
Removal of nitrogen monoxide from exhaust gases through novel catalytic processes
Masakazu Iwamoto,Hamada Hideaki +1 more
TLDR
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.About:
This article is published in Catalysis Today.The article was published on 1991-08-30. It has received 749 citations till now. The article focuses on the topics: Selective catalytic reduction & Exhaust gas.read more
Citations
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Journal ArticleDOI
Identification of Neutral and Charged N x O y Surface Species by IR Spectroscopy
TL;DR: In this article, the infrared spectral performance of N x O y species observed on oxide surfaces [N2O, NO−, NO, (NO)2, N2O3, NO+, NO2 − (different nitro and nitrito anions), NO2, n2O4, N 2O5, NO2 and NO3 − (bridged, bidentate, and monodentate nitrates)] is considered.
Journal ArticleDOI
Automotive catalytic converters: current status and some perspectives
TL;DR: In this article, the authors illustrate the technology for abatement of exhaust emissions by analysing the current understanding of TWCs, the specific role of the various components, the achievements and the limitations.
Journal ArticleDOI
Catalytic removal of NO
TL;DR: In this paper, the authors review the catalytic reactions for the removal of NO and discuss the reduction of NO in the presence of NH3, CO, H-2 or hydrocarbons as well as the decomposition of NO.
Journal ArticleDOI
Nitric oxide catalysis in automotive exhaust systems
TL;DR: In this paper, a review of the literature on NO catalysis is presented, focusing on the threeway catalyst system which simultaneously promotes the reduction of nitrogen oxides and the oxidation of carbon monoxide and hydrocarbons.
Journal ArticleDOI
Catalysis for NOx abatement
TL;DR: In this paper, the main portion of the review discusses the progress and development of various catalysts for NOx removal from exhaust by NO decomposition, NO reduction by CO or H-2 or NH3 or hydrocarbons.
References
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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
Copper(II) ion-exchanged ZSM-5 zeolites as highly active catalysts for direct and continuous decomposition of nitrogen monoxide
Masakazu Iwamoto,Hiroshi Furukawa,Yoshihiro Mine,Fumihide Uemura,Shin-ichi Mikuriya,Shuichi Kagawa +5 more
TL;DR: In this article, ZSM-5 zeolites containing Cu2+ ions showed unusually high and steady state activity for the catalytic decomposition of nitrogen monoxide; for example, the degrees of conversions of NO, and of conversion into N2 and O2 were 97, 85, and 70%, respectively, at 823 K with a contact time of 10.0 g s cm−3 over 73% exchanged Cu-ZSM−5.
Journal ArticleDOI
Cu-ZSM-5 zeolite as highly active catalyst for removal of nitrogen monoxide from emission of diesel engines
TL;DR: In this paper, copper ion-exchanged ZSM-5 zeolite is the most active for the selective reduction of nitric oxide by ethene in the presence of oxygen at temperatures as low as 437 −
Journal ArticleDOI
Selective reduction of nitrogen oxides with hydrocarbons over solid acid catalysts in oxygen-rich atmospheres
TL;DR: In this article, the acidity of a series of silica-alumina catalysts is suggested to be one of the main factors that determine catalytic activity. But this is not the case for all catalysts.
Journal ArticleDOI
Catalytic decomposition of nitric oxide over copper(II)-exchanged, Y-type zeolites
TL;DR: In this article, the catalytic decomposition of NO has been investigated over copper-exchanged Y-type zeolites (CuNaY) at 573-823 K in a flow reactor.
Related Papers (5)
Studies of the surface species formed from nitric oxide on copper zeolites
József Valyon,W.Keith Hall +1 more