Journal ArticleDOI
Automotive exhaust catalysis
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 automotive catalysts
Frank Haaß,Hartmut Fuess +1 more
TL;DR: In this article, the authors deal with current developments in automotive exhaust catalysts, focusing on Pd only catalysts and new oxygen storage systems for three-way catalysis, as well as new concepts and characteristics of diesel oxidation catalysts based on platinum and palladium.
Journal ArticleDOI
Pt metal-CeO2 interaction: Direct observation of redox coupling between Pt0/Pt2+/Pt4+ and Ce4+/Ce3+ states in Ce0.98Pt0.02O2−δ catalyst by a combined electrochemical and x-ray photoelectron spectroscopy study
Sudhanshu Sharma,M. S. Hegde +1 more
TL;DR: Pt ions-CeO(2) interaction in Ce(1-x)Pt(x)O( 2-delta) has been studied for the first time by electrochemical method combined with x-ray diffraction and x-rays photoelectron spectroscopy demonstrating linear relation between oxidation of Pt(2+) to Pt(4+) with simultaneous reduction in Ce-4+) to Ce(3+) redox couple.
Journal ArticleDOI
Thermal activation of Pd/CeO2-SnO2 catalysts for low-temperature CO oxidation
Elena M. Slavinskaya,Andrey V. Zadesenets,Olga A. Stonkus,Andrey I. Stadnichenko,Andrey Shchukarev,Yu. V. Shubin,Sergey V. Korenev,Andrei I. Boronin +7 more
TL;DR: In this article, the counter precipitation method was used to synthesize Pd/CeO2-SnO2 catalysts, which possess excellent low-temperature activity and high thermal stability.
Journal ArticleDOI
Oxidation State and Symmetry of Magnesia-Supported Pd13Ox Nanocatalysts Influence Activation Barriers of CO Oxidation
Michael Moseler,Michael Moseler,Michael Walter,Michael Walter,Bokwon Yoon,Uzi Landman,Vahideh Habibpour,Chris J. Harding,Sebastian Kunz,Ueli Heiz +9 more
TL;DR: It is shown that molecular oxygen dissociates easily on the supported Pd(13) cluster, leading to facile partial oxidation to form Pd (13)O(4) clusters with C(4v) symmetry, which show lower temperature-catalyzed CO combustion, already starting at cryogenic temperature.
Journal ArticleDOI
Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts
Ram Prasad,Sony,Pratichi Singh +2 more
TL;DR: In this paper, the authors developed cobaltite spinel catalysts for the oxidation of a lean mixture of LPG, which achieved 100% LPG conversion over a 50-hour continuous run at a constant temperature of 265 °C.
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.