The interplay between ceria particle size, reducibility, and ethanol oxidation activity of ceria-supported gold catalysts

2018 ◽  
Vol 3 (1) ◽  
pp. 75-85 ◽  
Author(s):  
Gregory M. Mullen ◽  
Edward J. Evans ◽  
Benjamin C. Siegert ◽  
Nathan R. Miller ◽  
Benjamin K. Rosselet ◽  
...  
Keyword(s):  
Particle Size ◽  
Catalytic Activity ◽  
Ethanol Oxidation ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
Oxidation Activity ◽  
Supported Gold Catalysts ◽  
Supported Gold ◽  
Ceria Particle

The size of ceria particles influenced the activity of Au/CeO2 catalysts for ethanol oxidation, demonstrating a linear correlation between oxygen storage capacity and catalytic activity.

Pt/porous nanorods of ceria as efficient high temperature catalysts with remarkable catalytic stability for carbon dioxide reforming of methane

2015 ◽  
Vol 3 (35) ◽  
pp. 18074-18082 ◽  
Author(s):  
Zhiyun Zhang ◽  
Jing Li ◽  
Wei Gao ◽  
Yuanyuan Ma ◽  
Yongquan Qu
Keyword(s):  
Carbon Dioxide ◽  
Thermal Stability ◽  
Catalytic Activity ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
High Catalytic Activity ◽  
Carbon Dioxide Reforming ◽  
Catalytic Stability ◽  
High Oxygen Storage Capacity

Pt/porous nanorods of CeO2 with a large surface area, a high oxygen storage capacity and a remarkable thermal stability exhibit high catalytic activity and stability for the carbon dioxide reforming of methane reaction at 800 °C.

Synthesis and Characterization of Ce0.5Zr0.5O2 Nanocomposite and its Supported Pd-Only Catalysis Activity

2014 ◽  
Vol 633 ◽  
pp. 77-81
Author(s):  
Dong Xia Yang ◽  
Ping Ning ◽  
Jie Li He ◽  
Jing Fang Zhu ◽  
Ting Ting Zheng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
X Ray Diffraction ◽  
Fractional Precipitation ◽  
Temperature Programmed ◽  
Co Precipitation ◽  
Redox Ability

The Ce0.5Zr0.5O2 nanocomposites (CZ) were prepared by co-precipitation(CP), fractional precipitation (FP) and fractional precipitation with hydrothermal treatment (FP-HT). The samples were characterized by X-ray diffraction (XRD), Brunauer-Emmet Teller method (BET), H2-temperature programmed reduction (H2-TPR), and thermogravimetric analysis (TG) under H2-N2. XRD results displayed that all samples formed a single solid solution-like ceria-zirconia phase. BET results revealed CZ prepared by FP-HT (CZ-FP-HT) had the highest surface area. H2-TPR and TG analysis under H2-N2 showed CZ-FP-HT exhibited the strongest redox ability and oxygen storage capacity. Moreover, three-way catalysts of Pd-Rh supported on CZ -FP-HT and commercial CZ with same composites were prepared, and their three-way catalytic activity were also studied by engine evaluation. Pd-Rh/CZ-FP-HT showed a bit of higher oxygen storage capacity, catalytic activity and better thermal stability than Pd-Rh/CZ-commercial.

scholarly journals CO2 Methanation on Supported Rh Nanoparticles: The combined Effect of Support Oxygen Storage Capacity and Rh Particle Size

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 944 ◽  
Author(s):  
Georgia Botzolaki ◽  
Grammatiki Goula ◽  
Anatoli Rontogianni ◽  
Ersi Nikolaraki ◽  
Nikolaos Chalmpes ◽  
...  
Keyword(s):  
Particle Size ◽  
Rational Design ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Catalyst Design ◽  
Oxygen Storage ◽  
Design Parameters ◽  
Co2 Methanation ◽  
Design And Optimization ◽  
Effect Of Support

CO2 hydrogenation toward methane, a reaction of high environmental and sustainable energy importance, was investigated at 200–600 °C and H2/CO2 = 4/1, over Rh nanoparticles dispersed on supports with different oxygen storage capacity characteristics (γ-Al2O3, alumina-ceria-zirconia, and ceria-zirconia). The effects of the support OSC and Rh particle size on reaction behavior under both integral and differential conditions were investigated, to elucidate the combined role of these crucial catalyst design parameters on methanation efficiency. A volcano-type variation of methanation turnover frequency was found in respect to support OSC; Rh/ACZ, with intermediate OSC, was the optimal catalyst. The structure sensitivity of the reaction was found to be a combined function of support OSC and Rh particle size: For Rh/γ-Al2O3 (lack of OSC) methanation was strongly favored on small particles—the opposite for Rh/CZ (high OSC). The findings are promising for rational design and optimization of CO2 methanation catalysts by tailoring the aforementioned characteristics.

Shape-Selective Oriented Cerium Oxide Nanocrystals Permit Assessment of the Effect of the Exposed Facets on Catalytic Activity and Oxygen Storage Capacity

2015 ◽  
Vol 7 (16) ◽  
pp. 8545-8555 ◽  
Author(s):  
Thadathil S. Sreeremya ◽  
Asha Krishnan ◽  
Kottayilpadi C. Remani ◽  
Kashinath R. Patil ◽  
Dermot F. Brougham ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Cerium Oxide ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
Shape Selective ◽  
Exposed Facets

scholarly journals Preparation of high oxygen storage capacity and thermally stable ceria–zirconia solid solution

2016 ◽  
Vol 6 (3) ◽  
pp. 897-907 ◽  
Author(s):  
Jie Li ◽  
Xiaofei Liu ◽  
Wangcheng Zhan ◽  
Yun Guo ◽  
Yanglong Guo ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid Solution ◽  
Catalytic Activity ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
High Oxygen ◽  
Coprecipitation Method ◽  
Oxygen Storage ◽  
Thermally Stable ◽  
High Oxygen Storage Capacity

Ce0.5Zr0.5O2 prepared by the complexing–coprecipitation method (CZ-2) exhibits higher oxygen storage capacity (OSC) and thermal stability than that prepared by coprecipitation (CZ-1) or the complexing–coprecipitation-solution (CZ-3) method. After being aged at 1100 °C for 6 h, CZ-2a exhibited the highest OSC and catalytic activity.

Oxygen storage capacity versus catalytic activity of ceria–zirconia solid solutions in CO and HCl oxidation

2019 ◽  
Vol 9 (9) ◽  
pp. 2163-2172 ◽  
Author(s):  
Yu Sun ◽  
Chenwei Li ◽  
Igor Djerdj ◽  
Omeir Khalid ◽  
Pascal Cop ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid Solutions ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
Oxidation Reactions ◽  
The Relationship

CexZr1−xO2 solid solutions were prepared to explore the relationship between oxygen storage capacity and activity of oxidation reactions.

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