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
Chemistry of precious metal oxides relevant to heterogeneous catalysis.
TL;DR: The chemical conditions that facilitate stabilization of the notoriously oxophobic precious metals in oxide environments are reviewed, and complex oxide hosts that have proven to be amenable to reversible redox cycling of PGMs are surveyed.
Journal ArticleDOI
Correlating Catalytic Methanol Oxidation with the Structure and Oxidation State of Size-Selected Pt Nanoparticles
Lindsay R. Merte,Mahdi Ahmadi,Farzad Behafarid,Luis K. Ono,Estephania Lira,Jeronimo Matos,Long Li,Judith C. Yang,Beatriz Roldan Cuenya +8 more
TL;DR: In this article, the structure and chemical state of size-selected platinum nanoparticles (NPs) prepared by micelle encapsulation and supported on γ-Al2O3 during the oxidation of methanol under oxygen-rich reaction conditions following both oxidative and reductive pretreatments.
Journal ArticleDOI
Formation of NH3 and N2O in a modern natural gas three-way catalyst designed for heavy-duty vehicles: the effects of simulated exhaust gas composition and ageing
Pauliina Nevalainen,Niko M. Kinnunen,Anna Kirveslahti,Kauko Kallinen,Teuvo Maunula,Matthew Keenan,Mika Suvanto +6 more
TL;DR: In this article, the authors studied how high temperature NH3 and N2O formed in modern, fresh and aged bimetallic Pd/Rh three-way catalysts in simulated exhaust gas.
Journal ArticleDOI
Materials Issues Related to Catalysts for Treatment of Diesel Exhaust
TL;DR: In this paper, the authors summarize material-related issues that are unique to each of these technologies, and point out the improvements necessary to facilitate their deployment, concluding that SCR with urea and lean NO{sub x} traps are the leading contender technologies for commercial deployment.
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Morphology effect on the structure-activity relationship of Rh/CeO2-ZrO2 catalysts
TL;DR: In this article, four CeO2-ZrO2 mixed oxides with different morphologies were synthesized using hydrothermal (polyhedra, rods and plates) and coprecipitation method (disordered).
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.