Steam reforming of ethanol over Ni/CexTi1−xO2 catalysts

Ye, J.L.; Wang, Yunchong; Liu, Y.; Wang, H.

doi:10.1016/j.ijhydene.2008.08.036

Cited by 58 publications

(38 citation statements)

References 46 publications

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“…Incorporation of Ti 4+ into the CeO 2 lattice and formation of Ce-O-Ti solid solution have been well established [32,33]. The Ti 4+ is smaller than Ce 4+ , so that Ce 4+ is capable of partial substitution by Ti 4+ in the Ce-Ti support system.…”

Section: Resultsmentioning

confidence: 99%

Effect of Ce/Ti ratio on the catalytic activity and stability of Ni/CeO2–TiO2 catalyst for dry reforming of methane

Kim

Lee

Won

et al. 2015

Chemical Engineering Journal

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Section: Resultsmentioning

confidence: 99%

Effect of Ce/Ti ratio on the catalytic activity and stability of Ni/CeO2–TiO2 catalyst for dry reforming of methane

Kim

Lee

Won

et al. 2015

Chemical Engineering Journal

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“…3 In order to improve the thermal stability, metal ions are normally introduced into ceria. [4][5][6][7] In particular, the insertion of zirconium ions into ceria was found to be an effective approach to enhance the thermal stability and oxygen storage capacity of ceria. [8][9][10][11] For a long time, the degradation of ceria has been ascribed to its surface area decrease, which in turn leads to the decrease of its OSC.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Zr with CeO₂(111) Thin Film and Its Influence on Supported Ag Nanoparticles

Wang

et al. 2015

J. Phys. Chem. C

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Metal-support interaction plays a crucial role in modulating the activity and selectivity of oxidesupported metal nanoparticles in heterogonous catalysis. Zr-doped ceria is a critical component in automotive three-way catalysts. In order to understand the doping effect and Zr-CeO 2 interaction at the atomic level, here we employed X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM) to comprehensively investigate the structures, morphologies and interfacial electronic properties of submonolayer coverage of Zr deposited onto 2 nm-thick well-ordered CeO 2 (111) thin films grown on Cu(111) at different temperatures and its effect on Ag growth under ultrahigh vacuum conditions. The strong Zr-CeO 2 interaction leads to a two-dimensional (2D) growth of Zr on the CeO 2 (111) surface and the formation of a homogeneous Zr-O-Ce mixed oxide layer at room temperature, accompanied by partial reduction of Ce from 4 + to 3 + state. At high temperature, both XPS and STM results indicate that the reverse oxygen spillover from ceria substrate to Zr clusters occurs, leading to the formation of reconstructed zirconia and further reduction of ceria. Deposition of Ag onto the Zr pre-deposited CeO 2 (111) surface results in a three-dimensional growth of Ag nanoparticles with a higher particle density and smaller particle size compared to those on the pure CeO 2 (111) surface under same conditions. In addition, an enhanced thermal stability of Ag particles upon annealing was observed on such mixed oxide surface.

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“…N.R.E. Radwan et al [14] obtained nickel titanate and NiO as minor phases at 500°C in materials prepared by nickel wet impregnation. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Nickel is one of the most frequently studied metallic ions in heterogeneous catalysis, for example: steam reforming of H 2 and organic synthesis, etc. [14][15][16]. Recently, nickel has been reported as a potential doping metal for improving the photocatalytic properties of the titanium semiconductor in the photoassisted degradation of pollutants [10][11][12][13][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Decomposition of Synthetic Alizarin Red S by Nickel Doped TiO2

et al. 2011

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The photocatalytic degradation in aqueous medium of the Alizarin Red S (ARS) dye using UV blacklight irradiation (k = 365 nm) over sol-gel nickeltitania doped photocatalyst (0.5-6 wt% Ni) was investigated. The doped semiconductors were characterized by XRD, nitrogen physisorption and UV-Vis diffuse reflectance spectroscopy. High specific surface areas (90 m 2 /g) and small crystallite sizes, which varied with the Ni content, were obtained. No evidence concerning the formation of NiO was observed by XRD, which suggested the deposition of small NiO composites onto the TiO 2 surface. A shift to the visible region of the Eg band gap was obtained by increasing the nickel content in the semiconductors. The substitution of some Ti 4? by Ni 2? cations during the preparation of the photocatalysts was proposed. It was found that the synthesis of the catalysts with 0.5, 1.5, 3 and 6 wt% of Ni resulted in semiconductors that were more active than P25 commercial titania in the photodegradation of ARS.Keywords Dye removal from wastewater Á Ni-doped TiO 2 Á Alizarin Red S dye adsorption Á Sol-gel TiO 2 Á Alizarin Red S (ARS)

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Steam reforming of ethanol over Ni/CexTi1−xO2 catalysts

Cited by 58 publications

References 46 publications

Effect of Ce/Ti ratio on the catalytic activity and stability of Ni/CeO2–TiO2 catalyst for dry reforming of methane

Effect of Ce/Ti ratio on the catalytic activity and stability of Ni/CeO2–TiO2 catalyst for dry reforming of methane

Interaction of Zr with CeO₂(111) Thin Film and Its Influence on Supported Ag Nanoparticles

Photocatalytic Decomposition of Synthetic Alizarin Red S by Nickel Doped TiO2

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Steam reforming of ethanol over Ni/CexTi1−xO2 catalysts

Cited by 58 publications

References 46 publications

Effect of Ce/Ti ratio on the catalytic activity and stability of Ni/CeO2–TiO2 catalyst for dry reforming of methane

Effect of Ce/Ti ratio on the catalytic activity and stability of Ni/CeO2–TiO2 catalyst for dry reforming of methane

Interaction of Zr with CeO2(111) Thin Film and Its Influence on Supported Ag Nanoparticles

Photocatalytic Decomposition of Synthetic Alizarin Red S by Nickel Doped TiO2

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Interaction of Zr with CeO₂(111) Thin Film and Its Influence on Supported Ag Nanoparticles