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
Enhanced CO Oxidation Activity of Ni@Ag Core–Shell Nanoparticles
Yuji Mahara,Hiroyuki Ishikawa,Junya Ohyama,Kyoichi Sawabe,Yuta Yamamoto,Shigeo Arai,Atsushi Satsuma +6 more
TL;DR: Ni@Ag core-shell nanoparticles supported on SiO2 were prepared by a galvanic replacement reaction between Ni and Ag at a low temperature (213 K) as discussed by the authors.
Journal ArticleDOI
Synthesis, structural characterization and magnetic properties of Fe/Pt core-shell nanoparticles
TL;DR: In this paper, structural and magnetic properties of Fe/Pt core-shell nanostructures were investigated using x-ray diffraction and transmission electron microscopy, showing the presence of significant interparticle interaction, the Neel-Brown relaxation frequency fo'= 5.3'×'1010'Hz and anisotropy constant Ka'= 3.6'
Journal ArticleDOI
Preparation and characterisation of γ-Al2O3 particles-supported Rh/Ce0.9Pr0.1O2 catalyst for N2O decomposition in the presence of O2, H2O and NOx
TL;DR: In this paper, a supported catalyst composed by the active phase Rh/Ce0.9Pr0.1O2 loaded on γ-Al2O3 particles was prepared and characterised by SEM, TEM, XRD, Raman spectroscopy, N2 adsorption at −196°C, H2-TPR and XPS.
Journal ArticleDOI
Recovery of Rare Earth Element Cerium from Spent Automotive Exhaust Catalysts Using a Novel Method
Zhexuan Zhao,Zhaofu Qiu,Ji Yang,Benteng Ma,Zhen Li,Shuguang Lu,Xu Yongye,Limei Cao,Wei Zhang +8 more
TL;DR: In this article, the rare earth element cerium (Ce) was recovered from spent automotive exhaust catalysts using di-2-ethylhexyl phosphoric acid (D2EHPA) in sulfuric acid media.
Journal ArticleDOI
Formation and sintering of Pt nanoparticles on vicinal rutile TiO2 surfaces
Felix Rieboldt,Stig Helveg,Ralf Bechstein,Lutz Lammich,Flemming Besenbacher,Jeppe V. Lauritsen,Stefan Wendt +6 more
TL;DR: Observed changes in the NP distribution can be explained inferring facile diffusion of Pt NP's along the [001] direction, indicating that the surface morphology and the amount of Ti(3+) excess charge do have an influence on the particle stability.
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.