Purification of gasoline exhaust gases using bimetallic Pd–Rh/δ-Al2O3 catalysts

@article{Vedyagin2019PurificationOG,
  title={Purification of gasoline exhaust gases using bimetallic Pd–Rh/$\delta$-Al2O3 catalysts},
  author={Aleksey A. Vedyagin and Vladimir O. Stoyanovskii and Roman M. Kenzhin and Elena M Slavinskaya and Pavel E. Plyusnin and Yury V. Shubin},
  journal={Reaction Kinetics, Mechanisms and Catalysis},
  year={2019},
  volume={127},
  pages={137-148}
}
Efficient neutralization of the exhaust gases from the automobile engines as well as development of the active and stable catalytic systems for pollution control remain actual challenge since the internal combustion engine was discovered. The present work was focused on the study of metal–metal and metal-support interactions taking place in the palladium- and rhodium-containing samples supported on delta-alumina. Catalytic performance of the catalyst was studied in three-way catalysis under… 
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References

SHOWING 1-10 OF 48 REFERENCES
Catalytic Purification of Exhaust Gases Over Pd–Rh Alloy Catalysts
Three-way catalysts with low content of Pd–Rh alloy particles used as active components were synthesized and studied. Monometallic and bimetallic mixed catalysts with corresponding precious metals
The thermal stability and catalytic performance of Ce-Zr promoted Rh-Pd/γ-Al2O3 automotive catalysts
Abstract The noble metals (Rh, Pd) supported on alumina promoted with Ce-Zr mixed oxides were investigated as catalysts under diverse oxidants/reductants ratios of simulated automotive exhaust feed
Characterization of Rh/Al2O3 catalysts after calcination at high temperatures under oxidizing conditions by luminescence spectroscopy and catalytic hydrogenolysis
Abstract Rhodium/alumina catalysts with Rh loadings of 0.01–0.5 wt.% with substantially different thermal stability of supports with respect to phase transformation to corundum were studied. It was
Stabilization of active sites in alloyed Pd–Rh catalysts on γ-Al2O3 support
Abstract Active components for three-way catalysts containing alloyed Pd–Rh particles with the concentration of the components 0.12 and 0.08 wt.%, respectively, were synthesized and studied. The
Advances in Automobile Exhaust Catalyst
Recent topics on catalysts, which have been developed for the control of automobile exhaust, are described in this review. The precise local structure around Ce and Zr atoms of CeO 2 -ZrO 2 solid
Influence of the Metallic Precursor and of the Catalytic Reaction on the Activity and Evolution of Pt(Cl)/δ-Al2O3 Catalysts in the Total Oxidation of Methane
Abstract In the light-off temperature range of methane total oxidation (250–600°C), two types of Pt/δ-Al 2 O 3 catalysts prepared from H 2 PtCl 6 or Pt(NH 3 ) 4 (OH) 2 show different catalytic
Catalytic properties of PdO/δ-Al2O3 catalysts prepared by hot isostatic pressing
Abstract The catalytic properties of PdO/δ-Al2O3 catalysts prepared by hot isostatic pressing (HIP) have been investigated. The HIP treated catalysts (HIPed catalysts) showed higher catalytic
Methane OSR over Pt-Ni/δ-Al2O3: Performance and power law type kinetics
Abstract Methane oxidative steam reforming (OSR) performance of two bimetallic Pt-Ni/δ-Al 2 O 3 catalysts, having Pt:Ni loadings, 0.2:10 and 0.3:10, were tested first. In the tests, residence time
Kinetics of the NO/H2/O2 reactions on natural gas vehicle catalysts—Influence of Rh addition to Pd
Abstract This paper reports an extensive kinetic study of the NO/H2 reaction on monometallic and bimetallic Pd and Rh based catalysts. The presence of oxygen in the feed has been examined and found
Prospect of Using Nanoalloys of Partly Miscible Rhodium and Palladium in Three-Way Catalysis
Alloys of partly miscible metals attract a growing attention due to their unique physicochemical properties. Palladium–rhodium solid solution was synthesized using a multi-metal single precursor
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