Journal ArticleDOI
The mechanism for NOx storage
TLDR
In this paper, the mechanisms for storing NOx in platinum-barium-alumina catalysts during lean-rich transients are investigated, and NO2 is found to be important for oxidation of the catalyst or of nitrites to form nitrates.Abstract:
The mechanisms for storing of NOx in platinum-barium-alumina catalysts during lean-rich transients are investigated. Oxidation of NO to NO2 is found to be an important step. NO2 is found to be important for oxidation of the catalyst or of nitrites to form nitrates. NOx is then stored in the form of surface nitrates. FTIR studies show no formation of bulk nitrates in these experiments.read more
Citations
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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
Overview of the Fundamental Reactions and Degradation Mechanisms of NOx Storage/Reduction Catalysts
TL;DR: In this article, the authors describe the work carried out in characterizing, developing, and understanding this catalyst technology for application in mobile exhaust gas aftertreatment, which includes five general steps involved in NOx reduction to N2 on NSR catalysts; NO oxidation, NO2 and NO sorption leading to nitrite and nitrate species.
Journal ArticleDOI
The Efficacy of Violence Prediction: A Meta-Analytic Comparison of Nine Risk Assessment Tools.
TL;DR: The moderate level of predictive accuracy of these risk assessment tools suggests that they should not be used solely for some criminal justice decision making that requires a very high level of accuracy such as preventive detention.
Journal ArticleDOI
NOx Storage−Reduction Catalysis: From Mechanism and Materials Properties to Storage−Reduction Performance
Sounak Roy,Alfons Baiker +1 more
TL;DR: Theoretical and Surface Science Studies Studies 4079 6.1.
Journal ArticleDOI
IR spectroscopy in catalysis
TL;DR: In this paper, a review of the most popular IR spectroscopy applications for catalytic applications is presented, starting from the very general basis of the spectroscopic method applied and focusing on the adsorption of chelating compounds on surfaces of mineral oxides.
References
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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.
Book
Global Warming: The Complete Briefing
TL;DR: A full survey of the present state of knowledge on global warming and what can be done about it can be found in this paper, where the information and interpretation is not just one man's view, but represents the common mind of the scientific community.
Book
Infrared Spectroscopy of Adsorbed Species on the Surface of Transition Metal Oxides
A. A. Davydov,Colin H. Rochester +1 more
TL;DR: In infrared spectroscopy, the state of surface cations on oxide catalysts was characterized by IR study of the absorbed probe molecules CO and NO complexation of alkenes on oxide surfaces as mentioned in this paper.
Journal ArticleDOI
Mechanism of the Selective Catalytic Reduction of NO by NH3over MnOx/Al2O3☆
TL;DR: In this paper, the adsorption of NO and NH3 on MnOx/Al2O3 catalysts, used for the low temperature selective catalytic reduction of NO, was studied separately by use of TPD (with labelled compounds) and FTIR.