Depletion of CO oxidation activity of supported Au catalysts prepared from thiol-capped Au nanoparticles by sulfates formed at Au–titania boundaries: Effects of heat treatment conditions on catalytic activity

2010 ◽  
Vol 270 (2) ◽  
pp. 234-241 ◽  
Author(s):  
Yutaka Tai ◽  
Wataru Yamaguchi ◽  
Masahisa Okada ◽  
Fumihiko Ohashi ◽  
Ken-ichi Shimizu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Oxidation Activity ◽  
Treatment Conditions

Preparation of TiO2-supported twinned gold nanoparticles by CO treatment and their CO oxidation activity

2015 ◽  
Vol 51 (87) ◽  
pp. 15823-15826 ◽  
Author(s):  
Junya Ohyama ◽  
Taiki Koketsu ◽  
Yuta Yamamoto ◽  
Shigeo Arai ◽  
Atsushi Satsuma
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
High Catalytic Activity ◽  
Oxidation Activity

Au/TiO2 prepared by CO treatment showed high catalytic activity for CO oxidation due to twinned structure of Au nanoparticles.

In situ growth of small Au nanoparticles on ZnO nanorods via ultrasonic irradiation toward super-enhanced catalytic activity

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107433-107441 ◽  
Author(s):  
Xueling Song ◽  
Xiao Zhang ◽  
Ping Yang
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Ultrasonic Irradiation ◽  
Photocatalytic Performance ◽  
Au Nanoparticles ◽  
Zno Nanorods ◽  
Sonochemical Method ◽  
In Situ Growth ◽  
Oxidation Activity

Au/ZnO NRs created via a sonochemical method exhibit superior photocatalytic performance and enhanced CO oxidation activity.

scholarly journals The Sintering of Au Nanoparticles on Flat {100}, {111} and Zigzagged {111}-Nanofacetted Structures of Ceria and Its Influence on Catalytic Activity in CO Oxidation and CO PROX

2020 ◽  
Author(s):  
O. S. Bezkrovnyi ◽  
P. Kraszkiewicz ◽  
W. Mista ◽  
L. Kepinski
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Catalytic Activity ◽  
Beneficial Effect ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Ceria Support ◽  
Ceria Catalysts ◽  
Thermal Stability Of

Abstract The thermal stability of Au nanoparticles on ceria support of various morphology (nanocubes, nanooctahedra, and {111}-nanofacetted nanocubes) in oxidizing and reducing atmospheres was investigated by electron microscopy. A beneficial effect of the reconstruction of edges of ceria nanocubes into zigzagged {111}-nanofacetted structures on the inhibition of sintering of Au nanoparticles was shown. The influence of different morphology of Au particles on various ceria supports on the reducibility and catalytic activity in CO oxidation, and CO PROX of Au/ceria catalysts was also investigated and discussed. It was shown, that ceria nanocubes with flat {110} terminated edges are more suitable as a support for Au nanoparticles, used to catalyze CO oxidation, than zigzagged {111}- nanofacetted structures. Graphic Abstract

Silica-Supported Au Nanoparticles Decorated by CeO2: Formation, Morphology, and CO Oxidation Activity

2011 ◽  
Vol 115 (42) ◽  
pp. 20388-20398 ◽  
Author(s):  
Anita Horváth ◽  
Andrea Beck ◽  
Györgyi Stefler ◽  
Tímea Benkó ◽  
György Sáfrán ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Au Nanoparticles ◽  
Oxidation Activity

scholarly journals Origin of the catalytic activity of face-centered-cubic ruthenium nanoparticles determined from an atomic-scale structure

2016 ◽  
Vol 18 (44) ◽  
pp. 30622-30629 ◽  
Author(s):  
L. S. R. Kumara ◽  
Osami Sakata ◽  
Shinji Kohara ◽  
Anli Yang ◽  
Chulho Song ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Scale Structure ◽  
Atomic Scale ◽  
Face Centered Cubic ◽  
Ruthenium Nanoparticles ◽  
Oxidation Activity ◽  
Atomic Scale Structure ◽  
Face Centered

The 3D configuration models of novel fcc and conventional hcp ruthenium nanoparticles are studied to elucidate their CO oxidation activity.

High-heat treatment enhanced catalytic activity of CuO/CeO2 catalysts with low CuO content for CO oxidation

2020 ◽  
Vol 10 (15) ◽  
pp. 5256-5266 ◽  
Author(s):  
Jihang Yu ◽  
Qiangsheng Guo ◽  
Xiuzhen Xiao ◽  
Haifang Mao ◽  
Dongsen Mao ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Active Sites ◽  
High Heat ◽  
Catalytic Performance

CuO/CeO2 catalysts with low CuO content and calcined at 800 °C exhibited better catalytic performance than those calcined at 500 °C. The coordinatively unsaturated copper atoms were proved to be the main active sites in the CuO/CeO2 catalysts.

scholarly journals The influence of CePO4 nanorods on the CO oxidation activity of Au/GdPO4-rods

RSC Advances ◽  
2018 ◽  
Vol 8 (39) ◽  
pp. 21699-21711
Author(s):  
Yu Huanhuan ◽  
Chen Fayun ◽  
Zhubaolin Zhubaolin ◽  
Huang Weiping ◽  
Zhang Shoumin
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Co Oxidation ◽  
Oxidation Activity ◽  
Temperature Resistance ◽  
Ultrasound Method ◽  
High Temperature Resistance ◽  
Good Catalytic Activity ◽  
Content Of Gold ◽  
Good Support

A CePO4–GdPO4 composite was prepared by a general ultrasound method and could be a good support for gold nanocatalysts. Au/CePO4–GdPO4 catalysts with a low content of gold showed good catalytic activity, high temperature resistance and stability for CO oxidation.

Enhanced preferential CO oxidation on Zn2SnO4 supported Au nanoparticles: support and H2 effects

2016 ◽  
Vol 4 (37) ◽  
pp. 14430-14436 ◽  
Author(s):  
A. Leelavathi ◽  
N. Ravishankar ◽  
Giridhar Madras
Keyword(s):  
Co Oxidation ◽  
Low Temperatures ◽  
Au Nanoparticles ◽  
Gold Nanostructures ◽  
Preferential Oxidation ◽  
Oxidation Activity ◽  
Preferential Co Oxidation ◽  
Supported Gold

Although reducible-oxide-supported gold nanostructures exhibit the highest CO oxidation activity at low temperatures, they are not suitable for preferential oxidation (PROX) reactions owing to their limited selectivity towards CO in the presence of H2.

Effect of heat treatment conditions on the structure and catalytic properties of MnOx/Al2O3 in the reaction of CO oxidation

2013 ◽  
Vol 459 ◽  
pp. 73-80 ◽  
Author(s):  
Olga A. Bulavchenko ◽  
Tatyana N. Afonasenko ◽  
Pavel G. Tsyrul’nikov ◽  
Sergey V. Tsybulya
Keyword(s):  
Heat Treatment ◽  
Co Oxidation ◽  
Catalytic Properties ◽  
Treatment Conditions
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