Journal ArticleDOI
Automotive exhaust catalysis
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TLDR
The general trend has been one of increasingly complex catalyst formulations in response to increasingly stringent emission standards as discussed by the authors, but with greater emphasis on optimizing catalyst formulations for lean-burn applications and reducing catalyst cost and complexity without sacrificing performance.About:
This article is published in Journal of Catalysis.The article was published on 2003-05-01. It has received 693 citations till now.read more
Citations
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Journal ArticleDOI
FEATURES AND CATALYTIC PROPERTIES OF RhCu: A REVIEW
TL;DR: An overview of the most recent research works about this bimetallic system with emphasis in its especial characteristics can be found in this paper, where the authors report that at low Cu content, the catalytic activity of RhCu is superior to that of Rh but when the Cu content is higher the activity decays.
Book ChapterDOI
An optical investigation of a cold-start DISI engine startup strategy
Petros Efthymiou,Martin H. Davy,Colin P. Garner,Graham K. Hargrave,J. E. T. Rimmer,D. Richardson,J. Harris +6 more
TL;DR: In this paper, the in-cylinder combustion processes during a transient startup cycle in an optical Direct Injection Spark Ignition (DISI) engine running at 23°C were investigated.
Journal ArticleDOI
Characterization and Activity of Pd–Ir Catalysts in CO and C3H6 Oxidation Under Stoichiometric Conditions
TL;DR: In this article, bimetallic Pd-Ir catalysts based on halogen free precursors supported on alumina and La-stabilized alumina were prepared and characterized.
Journal ArticleDOI
Spatial distribution of cerium valence in model planar Pd/Ce0.7Zr0.3O2 catalysts
Shu-yi Zhang,Shu-yi Zhang,Michael B. Katz,Kai Sun,Obiefune K. Ezekoye,Manjula I. Nandasiri,H.-W. Jen,George W. Graham,Xiaoqing Pan +8 more
TL;DR: The spatial distribution of cerium valence in planar Pd/Ce0.7Zr0.3O2 catalysts was determined by electron energy loss spectroscopy (EELS) in a scanning transmission electron microscope (STEM).
Journal ArticleDOI
Catalytic Consequences of Reactive Intermediates during CO Oxidation on Ag Clusters
TL;DR: In this paper, a mechanism for CO oxidation on dispersed Ag cluster surfaces was proposed, where the operating pressure ratio of O2 to the square of CO, [O2]-to-[CO]2, dictates the relative O* and CO* coverages and in turn the rate coefficients.
References
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Book
Catalysis by Ceria and Related Materials
TL;DR: The use of ceria-based catalysts in automotive catalysts was discussed in this paper, where the authors showed that the properties and thermal stability of Ceria-zirconia and related materials can be characterized using surface analysis techniques.
Journal ArticleDOI
Rh-Loaded CeO2-ZrO2 Solid-Solutions as Highly Efficient Oxygen Exchangers: Dependence of the Reduction Behavior and the Oxygen Storage Capacity on the Structural-Properties
Paolo Fornasiero,R. Dimonte,Gangavarapu Ranga Rao,Jan Kašpar,S. Meriani,Alessandro Trovarelli,Mauro Graziani +6 more
TL;DR: In this paper, it is shown that incorporation of ZrO2 into a solid solution with CeO2 strongly promotes bulk reduction of the Rh-loaded solid solutions in comparison to a Rh/CeO2 sample.
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.
Book
Catalytic Air Pollution Control: Commercial Technology
TL;DR: In this paper, the authors present an overview of the history of catalytic components in diesel engines and their application in a variety of applications, such as catalytic converter, catalytic converters, and catalytic monoliths.
Journal ArticleDOI
Twenty-five years after introduction of automotive catalysts: what next?
TL;DR: The union of catalysts and the automobile has been one of the greatest successes of heterogeneous catalysis over the last 25 years as mentioned in this paper, and there will be continued research and development activity focused also on downstream applications (i.e. exhaust emission aftertreatment), especially for fuelefficient, lean-burn vehicles, both diesel and spark-ignited.