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
Structural characterization of Alumina-Supported Rh Catalysts: effects of Ceriation and Zirconiation by using metal-organic precursors
Anna Kroner,Mark A. Newton,Moniek Tromp,Moniek Tromp,Andrea E. Russell,Andrew J. Dent,John Evans,John Evans +7 more
TL;DR: XPS results indicate that after the calcination and reduction treatments, a small amount of chlorine is retained on the support of all rhodium catalysts, suggesting that ceria and zirconia protect the r Rhodium particles against extensive oxidation.
Journal ArticleDOI
Mechanisms, kinetics, and dynamics of oxidation and reactions on oxide surfaces investigated by scanning probe microscopy
Eric I. Altman,Udo D. Schwarz +1 more
TL;DR: A perspective is provided on advanced SPM techniques that hold great promise for yielding new insights into the mechanisms and rates of elemental processes that take place either during oxidation or on oxide surfaces, with particular emphasis on methods that extend the time and chemical resolution of dynamical SPM measurements.
Journal ArticleDOI
Morphology and nanostructure of CeO2(111) surfaces of single crystals and Si(111) supported ceria films.
H. H. Pieper,C. Derks,Marvin Hartwig Zoellner,Reinhard Olbrich,L. Tröger,Thomas Schroeder,M. Neumann,Michael Reichling +7 more
TL;DR: The surface morphology of CeO(2)(111) single crystals and silicon supported ceria films is investigated by non-contact atomic force microscopy and Kelvin probe force microscope for various annealing conditions and significant inhomogeneity in the KPFM signal is found even for best possible preparation conditions.
Journal ArticleDOI
Identification of the surface species responsible for N2O formation from the chemisorption of NO on Rh/alumina.
TL;DR: Energy dispersive EXAFS and diffuse reflectance infrared spectroscopy are combined synchronously at high time resolution (17 Hz) to probe how NO(g) reacts with gamma-Al(2)O(3) supported, metallic Rh nanoparticles of an average 11 A diameter.
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CO oxidation and NO reduction over supported Pt-Rh and Pd-Rh nanocatalysts: a comparative study
Abir De Sarkar,Badal C. Khanra +1 more
TL;DR: In this article, the surface compositions of supported Pt 50 Rh 50 and Pd 50 RH 50 three-way catalysts have been simulated by Monte-Carlo (MC) technique and used for calculating the activity of the catalysts for CO oxidation and NO reduction.
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.
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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.