scholarly journals Ultrastable titania-supported Au nanoparticles covered by chromia via photo-induced strategy for low-temperature CO oxidation

2021 ◽  
Vol 149 ◽  
pp. 106199
Author(s):  
Jie Chen ◽  
Fuying Huang ◽  
Qing Wang ◽  
Yongjun Huang ◽  
Xingxiang Ye ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Low Temperature Co Oxidation

Catalytically active structures of SiO2-supported Au nanoparticles in low-temperature CO oxidation

2013 ◽  
Vol 3 (3) ◽  
pp. 679-687 ◽  
Author(s):  
Kun Qian ◽  
Liangfeng Luo ◽  
Huizhi Bao ◽  
Qing Hua ◽  
Zhiquan Jiang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Active Structures ◽  
Catalytically Active ◽  
Low Temperature Co Oxidation

Hydroxyls-induced oxygen activation on “inert” Au nanoparticles for low-temperature CO oxidation

2011 ◽  
Vol 277 (1) ◽  
pp. 95-103 ◽  
Author(s):  
Kun Qian ◽  
Wenhua Zhang ◽  
Huaxing Sun ◽  
Jun Fang ◽  
Bo He ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Oxygen Activation ◽  
Low Temperature Co Oxidation

Restructuring-Induced Activity of SiO2-Supported Large Au Nanoparticles in Low-Temperature CO Oxidation

2008 ◽  
Vol 14 (34) ◽  
pp. 10595-10602 ◽  
Author(s):  
Kun Qian ◽  
Huaxing Sun ◽  
Weixin Huang ◽  
Jun Fang ◽  
Shanshan Lv ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Low Temperature Co Oxidation

scholarly journals Physical and Chemical Synthesis of Au/CeO2 Nanoparticle Catalysts for Room Temperature CO Oxidation: A Comparative Study

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1351
Author(s):  
Khaled Mohammad Saoud ◽  
Mohamed Samy El-Shall
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
Room Temperature ◽  
Au Nanoparticles ◽  
Redox Properties ◽  
Preparation Methods ◽  
Nanoparticle Catalysts ◽  
Low Temperature Co Oxidation ◽  
Physical And Chemical

In many heterogeneous catalytic reactions, such as low-temperature CO oxidation, the preparation conditions, and the role of the CeO2 support (oxygen vacancies and redox properties) in the dispersion and the chemical state of Au, are considered critical factors for obtaining gold nanoparticle catalysts with high catalytic performance. In this work, the physical and chemical preparation methods were compared, aiming at understanding how the preparation method influences the catalytic activity. The Au/CeO2 nanoparticle catalysts with 5% Au loading were prepared via the Physical Laser Vaporization Controlled Condensation method (LVCC), and the chemical Deposition-Precipitation method (DP) was used to investigate the effect of synthesis methods on the structure and the catalytic activity toward the CO oxidation. In this manuscript, we compare the activity of nanostructured Au/CeO2 catalysts. The structure and the redox properties of the catalysts were investigated by the XRD, SEM, TEM, TPR, and XPS. The catalytic activity for low-temperature CO oxidation was studied using a custom-built quartz tube flow reactor coupled with an infrared detector system at atmospheric pressure. The study reveals that the prepared CeO2-supported Au nanoparticles’ catalytic activity was highly dependent on the preparation methods. It showed that the sample prepared by the DP method exhibits higher catalytic efficiency toward CO oxidation when compared with the sample prepared by the LVCC method. The high catalytic activity could be attributed to the small particle size and shape, slightly higher Au concentration at the surface, surface-active Au species such as Au1+, along with the large interface between Au and CeO2. This study suggests that the stability, dispersion of Au nanoparticles on CeO2, and strong interaction between Au and CeO2 lead to strong oxidation ability even below room temperature. Considering the universal character of different physical and chemical methods for Au/CeO2 preparation, this study may also provide a base for supported Au-based catalysts for many oxidation reactions in energy and environmental applications.

Pt and Ir supported on mixed Ce0.97Ru0.03O2 oxide as low-temperature CO oxidation catalysts

2021 ◽  
Author(s):  
R. Rangel ◽  
E. González-A ◽  
A. Solís-García ◽  
T.A. Zepeda ◽  
D.H. Galván ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Oxidation Catalysts ◽  
Low Temperature Co Oxidation

Tailoring the Local Environment of Platinum in Single‐Atom Pt1/CeO2 Catalysts for Robust Low‐Temperature CO Oxidation

2021 ◽  
Author(s):  
Dong Jiang ◽  
Yonggang Yao ◽  
Tangyuan Li ◽  
Gang Wan ◽  
Xavier Isidro Pereira-Hernández ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Local Environment ◽  
Single Atom ◽  
Low Temperature Co Oxidation

Mesoporous CuO nanostructures for low-temperature CO oxidation

2021 ◽  
Vol 44 (3) ◽  
Author(s):  
Sourav Ghosh ◽  
Sukanya Kundu ◽  
Milan Kanti Naskar
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Low Temperature Co Oxidation

ChemInform Abstract: Comparison of the Performance Characteristics of Pt/SnOx and Au/MnOx Catalysts for Low-Temperature CO Oxidation.

ChemInform ◽  
2010 ◽  
Vol 22 (29) ◽  
pp. no-no
Author(s):  
S. D. GARDNER ◽  
G. B. HOFLUND ◽  
B. T. UPCHURCH ◽  
D. R. SCHRYER ◽  
E. J. KIELIN ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Performance Characteristics ◽  
Low Temperature Co Oxidation
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