Hydrogen Spillover Enhanced Hydroxyl Formation and Catalytic Activity Toward CO Oxidation at the Metal/Oxide Interface

2015 ◽  
Vol 21 (11) ◽  
pp. 4252-4256 ◽  
Author(s):  
Yuekang Jin ◽  
Guanghui Sun ◽  
Feng Xiong ◽  
Liangbing Ding ◽  
Weixin Huang
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Co Oxidation ◽  
Hydrogen Spillover ◽  
Oxide Interface ◽  
Hydroxyl Formation

Tuning the CO oxidation catalytic activity of supported metal–metal oxide heterostructures by an aqueous phase post-treatment process

2016 ◽  
Vol 4 (46) ◽  
pp. 18075-18083 ◽  
Author(s):  
Chunzheng Wu ◽  
Rosaria Brescia ◽  
Mirko Prato ◽  
Sergio Marras ◽  
Liberato Manna ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Metal Oxide ◽  
Co Oxidation ◽  
Treatment Process ◽  
Oxide Interface ◽  
Oxide Heterostructures ◽  
Metal Metal ◽  
Ligand Free ◽  
Post Treatment Process

Colloidal Au–MnO heterodimers were deposited on SiO2 and calcined at high temperature in air in order to prepare a ligand-free Au–Mn3O4/SiO2 model catalyst for CO oxidation with a well-defined Au size and Au–metal oxide interface.

scholarly journals CO Oxidation over Metal Oxide (La2O3, Fe2O3, PrO2, Sm2O3, and MnO2) Doped CuO-Based Catalysts Supported on Mesoporous Ce0.8Zr0.2O2 with Intensified Low-Temperature Activity

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 724 ◽  
Author(s):  
Yan Cui ◽  
Leilei Xu ◽  
Mindong Chen ◽  
Chufei Lv ◽  
Xinbo Lian ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Co Oxidation ◽  
Active Sites ◽  
Earth Metal ◽  
High Dispersion ◽  
Impregnation Method ◽  
X Ray

CuO-based catalysts are usually used for CO oxidation owing to their low cost and excellent catalytic activities. In this study, a series of metal oxide (La2O3, Fe2O3, PrO2, Sm2O3, and MnO2)-doped CuO-based catalysts with mesoporous Ce0.8Zr0.2O2 support were simply prepared by the incipient impregnation method and used directly as catalysts for CO catalytic oxidation. These mesoporous catalysts were systematically characterized by X-ray powder diffraction (XRD), N2 physisorption, transmission electron microscopy (TEM), energy-dispersed spectroscopy (EDS) mapping, X-ray photoelectron spectroscopy (XPS), and H2 temperature programmed reduction (H2-TPR). It was found that the CuO and the dopants were highly dispersed among the mesoporous framework via the incipient impregnation method, and the strong metal framework interaction had been formed. The effects of the types of the dopants and the loading amounts of the dopants on the low-temperature catalytic performances were carefully studied. It was concluded that doped transition metal oxides could regulate the oxygen mobility and reduction ability of catalysts, further improving the catalytic activity. It was also found that the high dispersion of rare earth metal oxides (PrO2, Sm2O3) was able to prevent the thermal sintering and aggregation of CuO-based catalysts during the process of calcination. In addition, their presence also evidently improved the reducibility and significantly reduced the particle size of the CuO active sites for CO oxidation. The results demonstrated that the 15CuO-3Fe2O3/M-Ce80Zr20 catalyst with 3 wt. % of Fe2O3 showed the best low-temperature catalytic activity toward CO oxidation. Overall, the present Fe2O3-doped CuO-based catalysts with mesoporous nanocrystalline Ce0.8Zr0.2O2 solid solution as support were considered a promising series of catalysts for low-temperature CO oxidation.

Topological transformation of LDH nanosheets to highly dispersed PtNiFe nanoalloys enhancing CO oxidation performance

Nanoscale ◽  
2020 ◽  
Vol 12 (27) ◽  
pp. 14882-14894 ◽  
Author(s):  
Junfang Ding ◽  
Liping Li ◽  
Ye Wang ◽  
Huixia Li ◽  
Min Yang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Co Oxidation ◽  
Superior Performance ◽  
Oxide Interface ◽  
Topological Transformation ◽  
Highly Dispersed ◽  
Oxidation Performance

Highly dispersed nanoalloys with a tailored metal–oxide interface are pivotal in developing advanced catalysts with superior performance for applications.

A rational design of a Pd-based catalyst with a metal–metal oxide interface influencing molecular oxygen in the aerobic oxidation of alcohols

2019 ◽  
Vol 21 (9) ◽  
pp. 2494-2503 ◽  
Author(s):  
Songhita Meher ◽  
Rohit Kumar Rana
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Molecular Oxygen ◽  
Rational Design ◽  
Aerobic Oxidation ◽  
Oxide Interface ◽  
Metal Metal ◽  
Oxidation Of Alcohols

The Pd–PdO interface stabilized on the rGO surface is shown to be the key to achieve enhanced catalytic activity in oxidation of alcohols under O2 as the oxidant.

The effect of the oxidation states of supported oxides on catalytic activity: CO oxidation studies on Pt/cobalt oxide

2019 ◽  
Vol 55 (64) ◽  
pp. 9503-9506 ◽  
Author(s):  
Hee Chan Song ◽  
Seungtaeg Oh ◽  
Sang Hoon Kim ◽  
Si Woo Lee ◽  
Song Yi Moon ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Co Oxidation ◽  
Cobalt Oxide ◽  
Platinum Nanoparticles ◽  
Oxidation States ◽  
Cobalt Oxides ◽  
Supported Oxides

The strong metal–oxide interaction of platinum nanoparticles (PtNPs) deposited on two types of cobalt oxides, CoO and Co3O4, was investigated using CO oxidation.

Facile Tuning of Metal/Oxide Interface in Hollow Nanoreactor Affecting Catalytic Activity and Selectivity

2018 ◽  
Vol 149 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Si Woo Lee ◽  
Hyosun Lee ◽  
Dong-Gyu Lee ◽  
Sunyoung Oh ◽  
In Su Lee ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Oxide Interface

Enhanced catalytic activity for CO oxidation by the metal–oxide perimeter of TiO2/nanostructured Au inverse catalysts

Nanoscale ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 3911-3917 ◽  
Author(s):  
Si Woo Lee ◽  
Jun Tae Song ◽  
Jaehoon Kim ◽  
Jihun Oh ◽  
Jeong Young Park
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Co Oxidation

We fabricated and used TiO2/nanoporous Au catalysts to determine the effect of the metal–oxide perimeter on catalytic activity.

CO Oxidation on Au Nanoparticles Supported on ZrO2: Role of Metal/Oxide Interface and Oxide Reducibility

ChemCatChem ◽  
2017 ◽  
Vol 9 (6) ◽  
pp. 1119-1127 ◽  
Author(s):  
Antonio Ruiz Puigdollers ◽  
Gianfranco Pacchioni
Keyword(s):  
Metal Oxide ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Oxide Interface

scholarly journals Co/Cu-MFF derived mesoporous ternary metal oxide microcubes for enhancing the catalytic activity of the CO oxidation reaction

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 24805-24811 ◽  
Author(s):  
Huijun Song ◽  
Li Zhang ◽  
Guancheng Xu ◽  
Chi Zhang ◽  
Xin Ma ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Co Oxidation Reaction ◽  
Ternary Metal

The fabricated CuxCo3−xO4 microcubes with structure and component merits exhibit good performance for CO oxidation.

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