Model Studies on CO Oxidation Catalyst Systems: Titania and Gold Nanoparticles

ChemPhysChem ◽  
2010 ◽  
Vol 11 (7) ◽  
pp. 1344-1363 ◽  
Author(s):  
Klaus Christmann ◽  
Sebastian Schwede ◽  
Susanne Schubert ◽  
Wilhelmine Kudernatsch
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Oxidation Catalyst ◽  
Model Studies ◽  
Catalyst Systems

scholarly journals An oxidized magnetic Au single atom on doped TiO2(110) becomes a high performance CO oxidation catalyst due to the charge effect

2017 ◽  
Vol 5 (36) ◽  
pp. 19316-19322 ◽  
Author(s):  
J. L. Shi ◽  
X. J. Zhao ◽  
L. Y. Zhang ◽  
X. L. Xue ◽  
Z. X. Guo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
High Performance ◽  
Important Application ◽  
Oxidation Catalyst ◽  
Single Atom ◽  
Charge Effect ◽  
Extensive Investigation ◽  
Doped Tio2

Catalysis using gold nanoparticles supported on oxides has been under extensive investigation for many important application processes.

Clay-based SiO2 as active support of gold nanoparticles for CO oxidation catalyst: Pivotal role of residual Al

2013 ◽  
Vol 35 ◽  
pp. 72-75 ◽  
Author(s):  
Yu Zhang ◽  
Bao Zhaorigetu ◽  
Meilin Jia ◽  
Chuncheng Chen ◽  
Jincai Zhao
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Pivotal Role ◽  
Oxidation Catalyst ◽  
Residual Al

Gold Nanoparticles Supported on Mesoporous Titania Thin Films with High Loading as a CO Oxidation Catalyst

2017 ◽  
Vol 12 (8) ◽  
pp. 877-881 ◽  
Author(s):  
Shingo Akita ◽  
Makoto Amemiya ◽  
Takanori Matsumoto ◽  
Yohei Jikihara ◽  
Tsuruo Nakayama ◽  
...  
Keyword(s):  
Thin Films ◽  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Oxidation Catalyst ◽  
High Loading ◽  
Mesoporous Titania

Monolayer Protected Gold Nanoparticles on Ceria for an Efficient CO Oxidation Catalyst

2007 ◽  
Vol 19 (4) ◽  
pp. 650-651 ◽  
Author(s):  
N. Hickey ◽  
P. Arneodo Larochette ◽  
C. Gentilini ◽  
L. Sordelli ◽  
L. Olivi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Oxidation Catalyst

Redox chemistry of gold in a Au/FeO /CeO2 CO oxidation catalyst

2009 ◽  
Vol 10 (8) ◽  
pp. 1196-1202 ◽  
Author(s):  
A. Penkova ◽  
K. Chakarova ◽  
O.H. Laguna ◽  
K. Hadjiivanov ◽  
F. Romero Saria ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Redox Chemistry ◽  
Oxidation Catalyst

Strong Metal–Support Interactions between Gold Nanoparticles and ZnO Nanorods in CO Oxidation

2012 ◽  
Vol 134 (24) ◽  
pp. 10251-10258 ◽  
Author(s):  
Xiaoyan Liu ◽  
Ming-Han Liu ◽  
Yi-Chia Luo ◽  
Chung-Yuan Mou ◽  
Shawn D. Lin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Zno Nanorods ◽  
Metal Support ◽  
Metal Support Interactions

scholarly journals Wolkenstein’s Model of Size Effects in CO Oxidation by Gold Nanoparticles

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 288 ◽  
Author(s):  
Nigora Turaeva ◽  
Herman Krueger
Keyword(s):  
Gold Nanoparticles ◽  
Co Oxidation ◽  
Active Sites ◽  
Kinetic Equations ◽  
Dissociative Adsorption ◽  
Transition Metal Catalysts ◽  
Band Theory ◽  
Shape Dependence ◽  
Langmuir Hinshelwood Mechanism ◽  
Electron Transfers

The Wolkenstein’s theory of catalysis and the d-band theory of formation chemical bonds between transition metal catalysts and adsorbates were used to develop the approach applied to the kinetics of CO oxidation by gold nanoparticles. In the model, within the framework of the mechanism of the reaction going through dissociative adsorption of oxygen molecules and reaction with gas-phase CO molecules, weak and strong chemisorption states of intermediates (O, CO2) were taken into account in the kinetic equations by introducing reversible electronic steps corresponding to electron transfers between the intermediates and the catalyst. As a result, we obtain the expression for the reaction rate, which exhibits a volcano-shape dependence upon the size of the gold nanoparticles at the conditions when the intermediates fractions are not small compared to the empty active sites of the catalyst. It is supposed that the approach can be also applied to the Langmuir-Hinshelwood mechanism.

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