Synthesis of highly ordered mesoporous CeO2 and low temperature CO oxidation over Pd/mesoporous CeO2

Jin, Mingshi; Park, Jung‐Nam; Shon, Jeong Kuk; Li, Zhenghua; Yoon, Minyoung; Na, Hyun Jung; Park, Young-Kwon; Kim, Ji Man

doi:10.1007/s11164-011-0385-9

Cited by 11 publications

(3 citation statements)

References 27 publications

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“…CO 2 production was reported at 52 °C on Pd-CeO 2 powders reduced by H 2 . 25 So we postulate that the oxidation state of the support plays a role in the change of activity. In order to confirm this result and study the surface state more precisely, the next section discusses the IR spectroscopic results acquired during these experiments.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Kaftan

Kollhoff

Nguyen

et al. 2016

Catal. Sci. Technol.

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The oxidation of carbon monoxide has been studied on pristine CeO 2 , Rh-CeO 2 , and Pt-CeO 2 powders prepared in one step by solution combustion synthesis (SCS). The reaction was cycled between an oxygenrich and a CO-rich feed with regard to the stoichiometric conditions. CO 2 production was monitored by mass spectrometry, while the surface species were probed by operando DRIFTS (Diffuse Reflectance Infrared Fourier Transform Spectroscopy). Whereas the reaction starts above 150°C on CeO 2 and Rh-CeO 2 and does not depend on the state of the surface (oxidized or reduced), the reaction on Pt-CeO 2 shows strong dependency on the initial state and substantial activity is achieved at much lower temperatures with the CO-rich feed. We relate this result to the change in the oxidation state of Pt via strong interaction with ceria.

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Section: Catalyst Characterizationmentioning

confidence: 99%

Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Kaftan

Kollhoff

Nguyen

et al. 2016

Catal. Sci. Technol.

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“…The typical synthesis of the mesoporous KIT-6 silica template was similar to the process described in the literature. 38,39 A triblock copolymer (pluronic P123, EO 20 PO 70 EO 20 , Aldrich) was dissolved in distilled water and n-butanol solvent was added to the mixture at room temperature. The solution was vigorously stirred for 6 h to obtain a clear polymer solution.…”

Section: Synthesis Of Kit-6 Silica Templatementioning

confidence: 99%

Efficient and reusable ordered mesoporous WO_x/SnO₂ catalyst for oxidative desulfurization of dibenzothiophene

Piao¹,

et al. 2021

RSC Adv.

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“…Considering that the redox ability of a material is closely related to its catalytic activity, 25 temperature programmed reduction (TPR) was performed on the thermally treated samples. Fig.…”

Section: Catalytic Activity Of Thermally Treated Mesoporous Cgomentioning

confidence: 99%

High-surface-area ordered mesoporous oxides for continuous operation in high temperature energy applications

et al. 2014

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The collapse of nanostructures at high temperature is one of the main drawbacks for the implementation of nanomaterials in some energy applications. An exciting virtual non-degradation up to 1000 C is presented here for ordered mesoporous gadolinia doped ceria. By using the nanocasting method based on the KIT-6 template, the long-term stability of the material is achieved when extending the self-limited grain growth regime, recently proved for thin films, to open three-dimensional structures. Contrary to widely employed high temperature stabilization treatments inside the template, this work shows the advantage of a counterintuitive and cost-effective thermal treatment at intermediate temperatures, lower than the operation temperature. The evolution of the mesostructure with time at high temperatures, ranging from 800 C to 1100 C, is reported in terms of the microstructure (grain size and specific surface area) and catalytic activity (redox ability and oxygen storage capacity). The possibility of extension of this methodology to almost all metal oxides and the capability of working at temperatures significantly over the state-of-the-art open a new avenue for the use of these high-surface area 3D nanostructures in upto-now forbidden high temperature energy applications such as solid oxide fuel/electrolysis cells, gas separation membranes or high temperature catalysis.

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Synthesis of highly ordered mesoporous CeO2 and low temperature CO oxidation over Pd/mesoporous CeO2

Cited by 11 publications

References 27 publications

Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Efficient and reusable ordered mesoporous WO_x/SnO₂ catalyst for oxidative desulfurization of dibenzothiophene

High-surface-area ordered mesoporous oxides for continuous operation in high temperature energy applications

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Synthesis of highly ordered mesoporous CeO2 and low temperature CO oxidation over Pd/mesoporous CeO2

Cited by 11 publications

References 27 publications

Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Efficient and reusable ordered mesoporous WOx/SnO2 catalyst for oxidative desulfurization of dibenzothiophene

High-surface-area ordered mesoporous oxides for continuous operation in high temperature energy applications

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Efficient and reusable ordered mesoporous WO_x/SnO₂ catalyst for oxidative desulfurization of dibenzothiophene