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
In Situ Time-Resolved Redox Dynamics of Pd Catalysts Under Oscillating A/F Conditions
Hiroshi Yoshida,Hiroshi Yoshida,Riichiro Kakei,Ayumi Fujiwara,Atsuko Tomita,Takeshi Miki,Masato Machida,Masato Machida +7 more
TL;DR: In this paper, the real-time redox of Pd/Al2O3 was monitored using the reflectance at 650nm at every second under simulated exhausts (CO-C3H6−NO-O2), which were switched between air-to-fuel ratio of 14.1 (rich) and 15.0 (lean).
Journal ArticleDOI
Nanometric Colloidal Sols of CeO2–ZrO2 Solid Solution as Catalyst Modifiers. I. Preparation and Structure
TL;DR: In this paper, stable nanometric colloidal sols consisting of fluorite-type metal oxides were prepared for use as chloride-free precursors for automotive catalysts.
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The Impact of CeO2 Loading on the Activity and Stability of PdO/γ-AlOOH/γ-Al2O3 Monolith Catalysts for CH4 Oxidation
Hamad AlMohamadi,Kevin J. Smith +1 more
TL;DR: In this article, the authors used a cordierite mini-monolith (2MgO.5SiO2) for CH4 oxidation in the presence of CO, CO2, H2O and SO2 at low temperature (≤550 °C).
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Recent Advances in Vehicle Exhaust Treatment with Photocatalytic Technology
TL;DR: In this paper , a review highlights the crucial role of photocatalytic technology in eliminating vehicle emissions using semiconductor catalysts, which can cause acute irritation and chronic diseases and significant research on the treatment of vehicle exhaust has received increasing attention in recent decades.
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Pt-modified nanometric Rh overlayer as an efficient three-way catalyst under lean conditions
Hiroshi Yoshida,Hiroshi Yoshida,Yusuke Kuzuhara,Tomoyo Koide,Junya Ohyama,Junya Ohyama,Masato Machida,Masato Machida +7 more
TL;DR: In this article, a nanometric Rh overlayer on a Fe−−Cr−Al metal foil prepared by pulsed arc-plasma deposition showed simultaneous removal of NO, CO and C3H6 in a simulated three-way catalyst reaction under stoichiometric conditions, whereas the conversions of NO and C 3H6 decreased under lean conditions.
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.
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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.
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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.