scholarly journals Tuning the Activity and Selectivity of Phenylacetylene Hydrosilylation with Triethylsilane in the Liquid Phase over Size Controlled Pt Nanoparticles

Catalysts ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 22 ◽  
Author(s):  
Dorina G. Dobó ◽  
Dániel Sipos ◽  
András Sápi ◽  
Gábor London ◽  
Koppány Juhász ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Pt Nanoparticles ◽  
Size Controlled

scholarly journals Molecular Orientations Change Reaction Kinetics and Mechanism: A Review on Catalytic Alcohol Oxidation in Gas Phase and Liquid Phase on Size-Controlled Pt Nanoparticles

Catalysts ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 226 ◽  
Author(s):  
Fudong Liu ◽  
Hailiang Wang ◽  
Andras Sapi ◽  
Hironori Tatsumi ◽  
Danylo Zherebetskyy ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Reaction Kinetics ◽  
Gas Phase ◽  
Pt Nanoparticles ◽  
Alcohol Oxidation ◽  
Kinetics And Mechanism ◽  
Size Controlled

Pt nanoparticles supported on YCoxFe1−xO3 perovskite oxides: highly efficient catalysts for liquid-phase hydrogenation of cinnamaldehyde

2019 ◽  
Vol 55 (23) ◽  
pp. 3363-3366 ◽  
Author(s):  
Yujie Xue ◽  
Huiyue Xin ◽  
Wenhui Xie ◽  
Peng Wu ◽  
Xiaohong Li
Keyword(s):  
Liquid Phase ◽  
Selective Hydrogenation ◽  
Pt Nanoparticles ◽  
Perovskite Oxides ◽  
Cinnamyl Alcohol ◽  
Highly Efficient ◽  
Liquid Phase Hydrogenation ◽  
Full Conversion

The Pt/YCo0.3Fe0.7O3 catalyst furnished ca. 95% selectivity to cinnamyl alcohol at nearly full conversion for the selective hydrogenation of cinnamaldehyde.

Size-controlled synthesis of Pt nanoparticles and their electrochemical activities toward oxygen reduction

2011 ◽  
Vol 36 (1) ◽  
pp. 706-712 ◽  
Author(s):  
Joung Woon Kim ◽  
Borami Lim ◽  
Hyun-Sook Jang ◽  
Seung Jun Hwang ◽  
Sung Jong Yoo ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Pt Nanoparticles ◽  
Controlled Synthesis ◽  
Size Controlled

scholarly journals Chemical Reduction of Titania Supported Gold by Glycerol

2019 ◽  
Vol 8 (4S2) ◽  
pp. 477-481
Keyword(s):  
Liquid Phase ◽  
Selective Oxidation ◽  
Chemical Reduction ◽  
Precipitation Method ◽  
Small Particles ◽  
Tio2 Sample ◽  
Supported Gold Catalysts ◽  
Oxidation Performance ◽  
Supported Gold ◽  
Size Controlled

Gold was loaded on TiO2 by deposition precipitation method (DPU). The as prepared DPU samples were reduced in the liquid phase through chemical reduction with pure glycerol. The advantage of this method is that, the formation of small particles (less than 7 nm) can be prevented. The chemically reduced 0.93% Au/TiO2 sample exhibited an average gold size of 12.6  0.92 nm while, the H2-reduced counterpart showed 4.2  0.25 nm. The efficacy of the size-controlled catalyst was demonstrated in the selective oxidation of HMF. The chemically reduced samples exhibited excellent selective oxidation performance by forming exclusively one product. This study reveals the possibility of controlling the size of metal-oxide supported gold catalysts.

Enhanced oxygen reduction reaction performance of size-controlled Pt nanoparticles on polypyrrole-functionalized carbon nanotubes

2019 ◽  
Vol 48 (21) ◽  
pp. 7130-7137 ◽  
Author(s):  
Kentaro Ichihashi ◽  
Satoshi Muratsugu ◽  
Shota Miyamoto ◽  
Kana Sakamoto ◽  
Nozomu Ishiguro ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Pt Nanoparticles ◽  
Reduction Reaction ◽  
Multi Wall Carbon Nanotubes ◽  
Nanoparticle Catalysts ◽  
Pyrrole Monomer ◽  
Reaction Performance ◽  
Size Controlled

Enhanced oxygen reduction reaction performances were achieved on size-controlled Pt nanoparticle catalysts prepared by the copolymerization of a Pt4-pyrrole complex and pyrrole monomer in the presence of multi-wall carbon nanotubes.

scholarly journals Catalytic CO Oxidation and H2O2 Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 949
Author(s):  
Lucas Warmuth ◽  
Gülperi Nails ◽  
Maria Casapu ◽  
Sheng Wang ◽  
Silke Behrens ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Co Oxidation ◽  
Gas Phase ◽  
Surface Area ◽  
Heterogeneous Catalysts ◽  
Direct Synthesis ◽  
Pt Nanoparticles ◽  
Titania Nanotubes ◽  
Catalytic Co Oxidation ◽  
H2o2 Direct Synthesis

Titania nanotubes (TNTs) impregnated with Pd and Pt nanoparticles are evaluated as heterogeneous catalysts in different conditions in two reactions: catalytic CO oxidation (gas phase, up to 500 °C) and H2O2 direct synthesis (liquid phase, 30 °C). The TNTs are obtained via oxidation of titanium metal and the intermediate layer-type sodium titanate Na2Ti3O7. Thereafter, the titanate layers are exfoliated and show self-rolling to TNTs, which, finally, are impregnated with Pd or Pt nanoparticles at room temperature by using Pd(ac)2 and Pt(ac)2. The resulting crystalline Pd/TNTs and Pt/TNTs are realized with different lengths (long TNTs: 2.0–2.5 µm, short TNTs: 0.23–0.27 µm) and a specific surface area up to 390 m2/g. The deposited Pd and Pt particles are 2–5 nm in diameter. The TNT-derived catalysts show good thermal (up to 500 °C) and chemical stability (in liquid-phase and gas-phase reactions). The catalytic evaluation results in a low CO oxidation light-out temperature of 150 °C for Pt/TNTs (1 wt-%) and promising H2O2 generation with a productivity of 3240 molH2O2 kgPd−1 h−1 (Pd/TNTs, 5 wt-%, 30 °C). Despite their smaller surface area, long TNTs outperform short TNTs with regard to both CO oxidation and H2O2 formation.

In Situ Investigation of Non-Isothermal Decomposition of Pt Acetylacetonate as One-Step Size-Controlled Synthesis of Pt Nanoparticles

2018 ◽  
Vol 215 (23) ◽  
pp. 1800488
Author(s):  
Anton A. Kulbakov ◽  
Mathieu Allix ◽  
Aydar Rakhmatullin ◽  
Alexey S. Mikheykin ◽  
Yuri V. Popov ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Controlled Synthesis ◽  
Isothermal Decomposition ◽  
Step Size ◽  
In Situ Investigation ◽  
One Step ◽  
Size Controlled
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