A Au monolayer on WC(0001) with unexpected high activity towards CO oxidation

Nanoscale ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 4753-4760 ◽  
Author(s):  
Xilin Zhang ◽  
Zongxian Yang ◽  
Ruqian Wu
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
High Activity

Au supported on WC(0001) exhibits catalytic activity towards CO oxidation.

Charaterization and Catalytic Activity of CuO and NiO Supported on ZrO2 for CO Low Temperature Oxidation

2013 ◽  
Vol 842 ◽  
pp. 237-241 ◽  
Author(s):  
Zhi Chen ◽  
Yi Long Xie ◽  
Jin Xing Qiu ◽  
Zhong He Chen
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
High Activity ◽  
Conversion Efficiency ◽  
Sol Gel ◽  
Coprecipitation Method ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Co Conversion

ZrO2 support has been prepared by sol-gel and coprecipitation method. CuO and NiO were supported on the supports and they were the activity metals for the catalysts. The CO conversion was tested. The light-off temperature of CO oxidation was 22°C and CO conversion efficiency was up to 50% at 169°C. The prepared catalysts of Cu, Ni supported on ZrO2-A had a high activity for CO oxidation at low temperature.

A novel Pd3O9@α-Al2O3 catalyst under a hydroxylated effect: high activity in the CO oxidation reaction

2015 ◽  
Vol 17 (48) ◽  
pp. 32140-32148 ◽  
Author(s):  
Qiaohong Li ◽  
Yongqin Wei ◽  
Rongjian Sa ◽  
Zuju Ma ◽  
Kechen Wu
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
High Activity ◽  
Oxidation Reaction ◽  
Co Oxidation Reaction ◽  
Α Al2o3 ◽  
Al2o3 Catalyst

A new Pd3O9@α-Al2O3 catalyst has been designed which shows superior catalytic activity for CO oxidation.

Litchi-peel-like hierarchical hollow copper-ceria microspheres: aerosol-assisted synthesis and high activity and stability for catalytic CO oxidation

Nanoscale ◽  
2018 ◽  
Vol 10 (48) ◽  
pp. 22775-22786 ◽  
Author(s):  
Wenge Li ◽  
Yanjie Hu ◽  
Hao Jiang ◽  
Nan Jiang ◽  
Wei Bi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
High Activity ◽  
Catalytic Co Oxidation ◽  
Highly Dispersed ◽  
Hollow Copper

Litchi-peel-like hierarchical hollow copper-ceria microspheres with highly dispersed CuOx and steps exhibit remarkable catalytic activity and stability for CO oxidation.

scholarly journals CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131 ◽  
Author(s):  
Rola Mohammad Al Soubaihi ◽  
Khaled Mohammad Saoud ◽  
Myo Tay Zar Myint ◽  
Mats A. Göthelid ◽  
Joydeep Dutta
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Active Sites ◽  
Bond Activation ◽  
Dissociative Adsorption ◽  
High Catalytic Activity ◽  
Good Catalytic Activity ◽  
Pretreatment Conditions ◽  
Oxidation Efficiency

Carbon monoxide (CO) oxidation is considered an important reaction in heterogeneous industrial catalysis and has been extensively studied. Pd supported on SiO2 aerogel catalysts exhibit good catalytic activity toward this reaction owing to their CO bond activation capability and thermal stability. Pd/SiO2 catalysts were investigated using carbon monoxide (CO) oxidation as a model reaction. The catalyst becomes active, and the conversion increases after the temperature reaches the ignition temperature (Tig). A normal hysteresis in carbon monoxide (CO) oxidation has been observed, where the catalysts continue to exhibit high catalytic activity (CO conversion remains at 100%) during the extinction even at temperatures lower than Tig. The catalyst was characterized using BET, TEM, XPS, TGA-DSC, and FTIR. In this work, the influence of pretreatment conditions and stability of the active sites on the catalytic activity and hysteresis is presented. The CO oxidation on the Pd/SiO2 catalyst has been attributed to the dissociative adsorption of molecular oxygen and the activation of the C-O bond, followed by diffusion of adsorbates at Tig to form CO2. Whereas, the hysteresis has been explained by the enhanced stability of the active site caused by thermal effects, pretreatment conditions, Pd-SiO2 support interaction, and PdO formation and decomposition.

scholarly journals On the Effects of Doping on the Catalytic Performance of (La,Sr)CoO3. A DFT Study of CO Oxidation

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 312 ◽  
Author(s):  
Antonella Glisenti ◽  
Andrea Vittadini
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Formation Energy ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Energy Profiles ◽  
High Concentrations ◽  
3D Impurities

The effects of modifying the composition of LaCoO3 on the catalytic activity are predicted by density functional calculations. Partially replacing La by Sr ions has benefical effects, causing a lowering of the formation energy of O vacancies. In contrast to that, doping at the Co site is less effective, as only 3d impurities heavier than Co are able to stabilize vacancies at high concentrations. The comparison of the energy profiles for CO oxidation of undoped and of Ni-, Cu-m and Zn-doped (La,Sr)CoO3(100) surface shows that Cu is most effective. However, the effects are less spectacular than in the SrTiO3 case, due to the different energetics for the formation of oxygen vacancies in the two hosts.

CO Oxidation on Inverse CeOx/Cu(111) Catalysts: High Catalytic Activity and Ceria-Promoted Dissociation of O2

2011 ◽  
Vol 133 (10) ◽  
pp. 3444-3451 ◽  
Author(s):  
Fan Yang ◽  
Jesús Graciani ◽  
Jaime Evans ◽  
Ping Liu ◽  
Jan Hrbek ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
High Catalytic Activity

Effect of Impurity and Pretreatment Conditions on the Catalytic Activity of Au Powder for CO Oxidation

2004 ◽  
Vol 97 (3/4) ◽  
pp. 203-208 ◽  
Author(s):  
Yasuo Iizuka ◽  
Aya Kawamoto ◽  
Kazuhiro Akita ◽  
Masakazu Daté ◽  
Susumu Tsubota ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Pretreatment Conditions

Facile synthesis of cubical Co3O4 supported Au nanocomposites with high activity for the reduction of 4-nitrophenol to 4-aminophenol

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32430-32433 ◽  
Author(s):  
Yuwen Yang ◽  
Yongyun Mao ◽  
Bin Wang ◽  
Xianwei Meng ◽  
Jiao Han ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Impregnation Method ◽  
Facile Synthesis ◽  
Turn Over Frequency ◽  
Turn Over

A facile impregnation method has been successfully applied for synthesis of a cubical Co3O4 supported Au nanocomposites, which leads to the excellent catalytic activity for the reduction of 4-nitrophenol with a high turn over frequency of 9.83 min−1.

Synthesis and characterization of new isostructural series LnFe0.5Sb1.5O6 (Ln = La-Sm) exhibiting high catalytic activity in CO oxidation

2019 ◽  
Vol 777 ◽  
pp. 655-662 ◽  
Author(s):  
A.V. Egorysheva ◽  
O.G. Ellert ◽  
E. Yu Liberman ◽  
D.I. Kirdyankin ◽  
S.V. Golodukhina ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Synthesis And Characterization ◽  
High Catalytic Activity
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