NO reduction by CO over gold catalysts based on ceria supports, prepared by mechanochemical activation, modified by Me3+ (Me = Al or lanthanides): Effect of water in the feed gas

Ilieva, L.; Pantaleo, G.; Nedyalkova, Radka; Sobczak, Janusz W.; Lisowski, Wojciech; Kantcheva, Margarita; Venezia, Anna Maria; Andreeva, D.

doi:10.1016/j.apcatb.2009.03.021

Cited by 20 publications

(13 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…7). This value is consistent with the broad literature [42][43][44] showing that the reduction of ceria surface layers is limited to 5.0%. When Au NPs were deposited onto the ceria, the XP spectrum of the Au 4f 7/2 core level shows a predominant contribution from metallic Au 0 at a binding energy of 84.0 eV [45] (Fig.…”

Section: Catalyst Characterizationsupporting

confidence: 93%

The Catalytic Use of Supported Gold Nanoparticles for Styrene Synthesis Via Oxidative Dehydrogenation of Ethylbenzene

et al. 2010

View full text Add to dashboard Cite

A series of supported gold catalysts have been prepared and tested as a new type of catalyst for the oxidative dehydrogenation of ethylbenzene to styrene. The effects of the supports (a-), preparation methods, gold loadings, and reaction conditions have been investigated. Among the catalysts tested, the Au/CeO 2 sample containing a 6.0 wt% gold content prepared via a routine deposition-precipitation method exhibited the highest ethylbenzene conversion (66.9%) and remarkable styrene selectivity (91.0%). The superior catalytic performance of the Au/CeO 2 catalysts can be attributed to a dramatic increase in the oxygen mobility and storage capacity of the parent CeO 2 material in association with the closely contacted Au nanoparticles, which is confirmed by the TPR, total OSC, and XPS measurements.

show abstract

Section: Catalyst Characterizationsupporting

confidence: 93%

The Catalytic Use of Supported Gold Nanoparticles for Styrene Synthesis Via Oxidative Dehydrogenation of Ethylbenzene

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Both of the NO conversion and N 2 selectivity increase as the temperature increases and reach >90% at 325 °C; complete conversion with 100% N 2 selectivity is achieved at 350 °C. In recently described reports, with a comparable gas hourly space velocity (GHSV), the complete conversion was achieved at ∼300 °C over noble-metal catalysts and 350−450 °C over transition-metal composite-oxide catalysts …”

Section: Resultsmentioning

confidence: 98%

Controllable Synthesis of Pure-Phase Rare-Earth Orthoferrites Hollow Spheres with a Porous Shell and Their Catalytic Performance for the CO + NO Reaction

Tang

et al. 2010

Chem. Mater.

View full text Add to dashboard Cite

Pure perovskite LnFeO3 (Ln = La, Pr−Tb) hollow spheres with porous shell and solid spheres (Ln = Dy−Yb, Y) have been successfully synthesized via calcination of a Ln-Fe citrate complex precursor, which was prepared via a convenient and effective hydrothermal method. The reaction parameters to obtain the Ln-Fe citrate complex with Ln/Fe = 1:1 can be calculated using a diagram of reaction species distribution in the solution. The calculated value was coincident well with the experimental one. The composition and the thermal decomposition processes of the Ln-Fe citrate complex were investigated carefully, using elemental analysis, inductively coupled plasma analysis (ICP), energy-dispersive spectroscopy (EDS), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The formation mechanism of the Ln-Fe citrate complex hollow spheres was proposed as an acidic digestion ripening process. Furthermore, all 13 pure-phase LnFeO3 microspheres had an excellent catalytic performance for the NO + CO reaction. The experimental results showed that the completed conversion of NO and specific selectivity of N2 were achieved, which could be comparable with the noble metal catalysts and better than that of LnFeO3 nanoparticles synthesized via the Pechini process. In addition, the LnFeO3 microspheres exhibited good chemical stability and almost invariable catalytic activity during the lifetime test lasting for 96 h.

show abstract

“… 18 Among them, copper-ceria catalysts are gaining tremendous attention and have been found to be the most interesting systems because of their higher reducibility correlated with the synergetic effect between copper and ceria at low temperatures. 19 , 20 They are also low-cost, environmentally friendly, and chemically and thermodynamically stable metal oxides. Furthermore, copper-ceria catalysts exhibit significant bifunctional catalytic removal properties for NO with CO originating from stationary and mobile sources, which is one of the most important reactions occurring in automotive catalytic converters in recent years due to its importance for environmental protection.…”

Section: Introductionmentioning

confidence: 99%

Copper doped ceria porous nanostructures towards a highly efficient bifunctional catalyst for carbon monoxide and nitric oxide elimination

Wang

Yue

et al. 2015

Chem. Sci.

View full text Add to dashboard Cite

show abstract

NO reduction by CO over gold catalysts based on ceria supports, prepared by mechanochemical activation, modified by Me3+ (Me = Al or lanthanides): Effect of water in the feed gas

Abstract: NO reduction by CO over gold catalysts based on ceria supports, prepared by mechanochemical activation, modified by Me 3+ (Me = Al or lanthanides): Effect of water in the feed gas

Cited by 20 publications

References 37 publications

The Catalytic Use of Supported Gold Nanoparticles for Styrene Synthesis Via Oxidative Dehydrogenation of Ethylbenzene

The Catalytic Use of Supported Gold Nanoparticles for Styrene Synthesis Via Oxidative Dehydrogenation of Ethylbenzene

Controllable Synthesis of Pure-Phase Rare-Earth Orthoferrites Hollow Spheres with a Porous Shell and Their Catalytic Performance for the CO + NO Reaction

Copper doped ceria porous nanostructures towards a highly efficient bifunctional catalyst for carbon monoxide and nitric oxide elimination

Contact Info

Product

Resources

About