Operando DRIFTS study of the redox and catalytic properties of CuO/Ce1−xTbxO2−δ(x = 0–0.5) catalysts: evidence of an induction step during CO oxidation

2012 ◽  
Vol 14 (7) ◽  
pp. 2144-2151 ◽  
Author(s):  
A. Martínez-Arias ◽  
A. B. Hungría ◽  
M. Fernández-García ◽  
A. Iglesias-Juez ◽  
J. Soria ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Properties ◽  
Induction Step

Pt-porous ZnO nanoribbon hybrid materials with enhanced catalytic performances

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1765-1768 ◽  
Author(s):  
Zhiqiang Cheng ◽  
Mingyue Yu ◽  
Guixia Yang ◽  
Lijuan Kang
Keyword(s):  
Photocatalytic Degradation ◽  
Co Oxidation ◽  
Hybrid Materials ◽  
Catalytic Properties ◽  
Seeded Growth ◽  
Hybrid Nanomaterial ◽  
Growth Method ◽  
Catalytic Applications ◽  
Catalytic Performances

With the help of bio-molecule l-lysine, a seeded growth method has been developed and Pt–ZnO porous nanoribbons have been successfully obtained. For the catalytic applications of CO oxidation and the photocatalytic degradation of MO, the hybrid nanomaterial exhibits remarkably enhanced catalytic properties.

scholarly journals Surface and Catalytic Properties of γ-Irradiated Cr2O3/Al2O3 Solids

1997 ◽  
Vol 15 (6) ◽  
pp. 465-476 ◽  
Author(s):  
G.A. El-Shobaky ◽  
A.M. Ghozza ◽  
G.M. Mohamed
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Surface Area ◽  
Pore Volume ◽  
Active Sites ◽  
Catalytic Properties ◽  
Total Pore Volume ◽  
Bet Surface Area ◽  
Two Samples ◽  
Γ Rays

Two samples of Cr2O3/Al2O3 were prepared by mixing a known mass of finely powdered Al(OH)3 with a calculated amount of CrO3 solid followed by drying at 120°C and calcination at 400°C. The amounts of chromium oxide employed were 5.66 and 20 mol% Cr2O3, respectively. The calcined solid specimens were then treated with different doses of γ-rays (20–160 Mrad). The surface and catalytic properties of the different irradiated solids were investigated using nitrogen adsorption at −196°C and the catalysis of CO oxidation by O2 at 300–400°C. The results revealed that γ-rays brought about a slight decrease in the BET surface area, SBET (15%), and in the total pore volume, Vp (20%), of the adsorbent containing 5.66 mol% Cr2O3. The same treatment increased the total pore volume, Vp (36%), and the mean pore radius, r̄ (43%), of the other adsorbent sample without changing its BET surface area. The catalytic activities of both catalyst samples were found to increase as a function of dose, reaching a maximum value at 80–160 Mrad and 40 Mrad for the solids containing 5.66 and 20 mol% Cr2O3, respectively. The maximum increase in the catalytic activity measured at 300°C was 59% and 100% for the first and second catalyst samples, respectively. The induced effect of γ-irradiation on the catalytic activity was an increase in the concentration of catalytically active sites taking part in chemisorption and in the catalysis of CO oxidation by O2 without changing their energetic nature. This was achieved by a progressive removal of surface hydroxy groups during the irradiation process.

One-Pot Self-Templating Synthesis of Pt Hollow Nanostructures and Their Catalytic Properties for CO Oxidation

2014 ◽  
Vol 20 (37) ◽  
pp. 11669-11674 ◽  
Author(s):  
Bu-Seo Choi ◽  
Sun Mi Kim ◽  
Jintaek Gong ◽  
Young Wook Lee ◽  
Shin Wook Kang ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Properties ◽  
One Pot ◽  
Hollow Nanostructures ◽  
Templating Synthesis

CO oxidation on Rh-doped hexadecagold clusters

2017 ◽  
Vol 7 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Jin-Xun Liu ◽  
Zhiling Liu ◽  
Ivo A. W. Filot ◽  
Yaqiong Su ◽  
Ionut Tranca ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Properties ◽  
Specific Activity ◽  
Gold Clusters ◽  
High Mass

Exploring the unique catalytic properties of gold clusters associated with specific nano-architectures is essential for designing improved catalysts with a high mass-specific activity.

Fabrication of Ni–Al nanoparticles via vacuum arc plasma evaporation and their catalytic properties for CO oxidation

2014 ◽  
Vol 478 ◽  
pp. 165-174 ◽  
Author(s):  
Ya Xu ◽  
Junyou Yang ◽  
Masahiko Demura ◽  
Toru Hara ◽  
Toshiyuki Hirano ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Properties ◽  
Vacuum Arc ◽  
Arc Plasma ◽  
Al Nanoparticles
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