scholarly journals Catalysis at the sub-nanoscale: complex CO oxidation chemistry on a few Au atoms

2015 ◽  
Vol 5 (1) ◽  
pp. 134-141 ◽  
Author(s):  
Nima Nikbin ◽  
Natalie Austin ◽  
Dionisios G. Vlachos ◽  
Michail Stamatakis ◽  
Giannis Mpourmpakis
Keyword(s):  
Co Oxidation ◽  
Magic Number ◽  
Multiscale Simulations ◽  
Catalytic Behavior ◽  
Au Clusters ◽  
Oxidation Chemistry

Multiscale simulations elucidate the experimentally observed “magic number” CO oxidation catalytic behavior of sub-nanoscale Au clusters.

Mechanistic interpretation of CO oxidation turnover rates on supported Au clusters

2012 ◽  
Vol 285 (1) ◽  
pp. 92-102 ◽  
Author(s):  
Manuel Ojeda ◽  
Bi-Zeng Zhan ◽  
Enrique Iglesia
Keyword(s):  
Co Oxidation ◽  
Turnover Rates ◽  
Au Clusters

SnO2 nano-rods with superior CO oxidation performance

2014 ◽  
Vol 2 (16) ◽  
pp. 5616-5619 ◽  
Author(s):  
Xiang Wang ◽  
Lihong Xiao ◽  
Honggen Peng ◽  
Wenming Liu ◽  
Xianglan Xu
Keyword(s):  
Co Oxidation ◽  
Noble Metal ◽  
Catalytic Performance ◽  
Metal Catalyst ◽  
Noble Metal Catalyst ◽  
Catalytic Behavior ◽  
Oxidation Performance ◽  
Nano Rods

SnO2 with a nano-rod morphology shows a superior catalytic performance over SnO2 with other morphologies for CO oxidation. The SnO2-rods’ catalytic behavior is very similar to that of a noble metal catalyst.

scholarly journals Size-dependent dynamic structures of supported gold nanoparticles in CO oxidation reaction condition

2018 ◽  
Vol 115 (30) ◽  
pp. 7700-7705 ◽  
Author(s):  
Yang He ◽  
Jin-Cheng Liu ◽  
Langli Luo ◽  
Yang-Gang Wang ◽  
Junfa Zhu ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Reaction ◽  
Au Nanoparticles ◽  
Working Condition ◽  
Ab Initio Molecular Dynamics ◽  
Present Observation ◽  
Size Dependent ◽  
Reaction Condition ◽  
Au Clusters ◽  
Co Oxidation Reaction

Gold (Au) catalysts exhibit a significant size effect, but its origin has been puzzling for a long time. It is generally believed that supported Au clusters are more or less rigid in working condition, which inevitably leads to the general speculation that the active sites are immobile. Here, by using atomic resolution in situ environmental transmission electron microscopy, we report size-dependent structure dynamics of single Au nanoparticles on ceria (CeO2) in CO oxidation reaction condition at room temperature. While large Au nanoparticles remain rigid in the catalytic working condition, ultrasmall Au clusters lose their intrinsic structures and become disordered, featuring vigorous structural rearrangements and formation of dynamic low-coordinated atoms on surface. Ab initio molecular-dynamics simulations reveal that the interaction between ultrasmall Au cluster and CO molecules leads to the dynamic structural responses, demonstrating that the shape of the catalytic particle under the working condition may totally differ from the shape under the static condition. The present observation provides insight on the origin of superior catalytic properties of ultrasmall gold clusters.

Influence of the Lanthanide Oxides on the Catalytic Behavior of Au/Al2O3 Catalysts for Total and Preferential CO Oxidation

2013 ◽  
Vol 1 (3) ◽  
pp. 237-246
Author(s):  
Tomás Ramírez Reina ◽  
Andrea Álvarez Moreno ◽  
Sandra Palma del Valle ◽  
Svetlana Ivanova ◽  
Francisca Romero-Sarria ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Lanthanide Oxides ◽  
Preferential Co Oxidation ◽  
Catalytic Behavior

Influence of textural parameters on the catalytic behavior for CO oxidation over ordered mesoporous Co3O4

2010 ◽  
Vol 97 (1-2) ◽  
pp. 284-291 ◽  
Author(s):  
Shijiao Sun ◽  
Qiuming Gao ◽  
Huanlei Wang ◽  
Jingkang Zhu ◽  
Hongliang Guo
Keyword(s):  
Co Oxidation ◽  
Catalytic Behavior ◽  
Ordered Mesoporous ◽  
Textural Parameters

Multiscale Modeling Reveals Poisoning Mechanisms of MgO-Supported Au Clusters in CO Oxidation

Nano Letters ◽  
2012 ◽  
Vol 12 (7) ◽  
pp. 3621-3626 ◽  
Author(s):  
Michail Stamatakis ◽  
Matthew A. Christiansen ◽  
Dionisios G. Vlachos ◽  
Giannis Mpourmpakis
Keyword(s):  
Co Oxidation ◽  
Multiscale Modeling ◽  
Au Clusters

Co3O4–SiO2Nanocomposite: A Very Active Catalyst for CO Oxidation with Unusual Catalytic Behavior

2011 ◽  
Vol 133 (29) ◽  
pp. 11279-11288 ◽  
Author(s):  
Chun-Jiang Jia ◽  
Manfred Schwickardi ◽  
Claudia Weidenthaler ◽  
Wolfgang Schmidt ◽  
Satu Korhonen ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Active Catalyst ◽  
Catalytic Behavior
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