Role of surface coverage of alumina with Pt nanoparticles deposited by laser electrodispersion in catalytic CO oxidation

2021 ◽  
Vol 536 ◽  
pp. 147656
Author(s):  
E.V. Golubina ◽  
T.N. Rostovshchikova ◽  
E.S. Lokteva ◽  
K.I. Maslakov ◽  
S.A. Nikolaev ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Surface Coverage ◽  
Pt Nanoparticles ◽  
Catalytic Co Oxidation

scholarly journals The critical role of water at the gold-titania interface in catalytic CO oxidation

Science ◽  
2014 ◽  
Vol 345 (6204) ◽  
pp. 1599-1602 ◽  
Author(s):  
J. Saavedra ◽  
H. A. Doan ◽  
C. J. Pursell ◽  
L. C. Grabow ◽  
B. D. Chandler
Keyword(s):  
Co Oxidation ◽  
Critical Role ◽  
Catalytic Co Oxidation

Role of the nanoscale in catalytic CO oxidation by supported Au and Pt nanostructures

2007 ◽  
Vol 76 (3) ◽  
Author(s):  
Sergey N. Rashkeev ◽  
Andrew R. Lupini ◽  
Steven H. Overbury ◽  
Stephen J. Pennycook ◽  
Sokrates T. Pantelides
Keyword(s):  
Co Oxidation ◽  
Catalytic Co Oxidation

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.

scholarly journals Ordered intermetallic Pt–Cu nanoparticles for the catalytic CO oxidation reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85634-85642 ◽  
Author(s):  
Govindachetty Saravanan ◽  
Rohini Khobragade ◽  
Laxmi Chand Nagar ◽  
Nitin Labhsetwar
Keyword(s):  
Particle Size ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Average Particle Size ◽  
Pt Nanoparticles ◽  
Average Particle ◽  
Cu Nanoparticles ◽  
Catalytic Co Oxidation ◽  
Co Oxidation Reaction ◽  
Ordered Intermetallic

Intermetallic platinum (Pt) nanoparticles using the abundantly available element copper (Pt3Cu, PtCu, PtCu3) with an average particle size of 4–5 nm on a γ-Al2O3 support were prepared to reduce the consumption of Pt for the removal of CO from gases.

scholarly journals Probing Hot Electron Flow Generated on Pt Nanoparticles with Au/TiO2Schottky Diodes during Catalytic CO Oxidation

Nano Letters ◽  
2008 ◽  
Vol 8 (8) ◽  
pp. 2388-2392 ◽  
Author(s):  
Jeong Y. Park ◽  
Hyunjoo Lee ◽  
J. Russell Renzas ◽  
Yawen Zhang ◽  
Gabor A. Somorjai
Keyword(s):  
Co Oxidation ◽  
Electron Flow ◽  
Pt Nanoparticles ◽  
Hot Electron ◽  
Catalytic Co Oxidation

Specific role of polymorphs of supporting titania in catalytic CO oxidation on gold

2011 ◽  
Vol 164 (1) ◽  
pp. 325-331 ◽  
Author(s):  
A. Beck ◽  
G. Magesh ◽  
B. Kuppan ◽  
Z. Schay ◽  
O. Geszti ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Specific Role ◽  
Catalytic Co Oxidation
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