Oxygen activation on the interface between Pt nanoparticles and mesoporous defective TiO2 during CO oxidation

2019 ◽  
Vol 151 (23) ◽  
pp. 234716 ◽  
Author(s):  
Sunyoung Oh ◽  
Hyunwoo Ha ◽  
Hanseul Choi ◽  
Changbum Jo ◽  
Jangkeun Cho ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Oxygen Activation

Synthesis and characterization of Au, Pt supported on graphene aerogel catalysts for CO oxidation at low temperature

2021 ◽  
Vol 11 (1) ◽  
pp. 118-122
Author(s):  
Chuyen Phan Thi ◽  
Hang Tran Thi Thanh ◽  
Phong Pham Nam ◽  
Ha Vu Thi Thu
Keyword(s):  
Low Temperature ◽  
Ambient Temperature ◽  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Graphene Aerogel ◽  
Highly Dispersed ◽  
Average Size

Au, Pt supported on graphene aerogel catalysts (PtAu/rGOA) with molar ratio of Pt and Au of 1:1, and total metal concentration of 5 % were successfully synthesized by hydrothermal method.  The obtained catalysts were characterized by Raman, XRD, XPS, HR-TEM, BET. It revealed that Au and Pt nanoparticles with average size of 3 – 5 nm were highly dispersed on aerogel graphene. The activity of these catalysts was tested  in CO oxidation. The results showed that the conversion of CO at ambient temperature was 100% during 25 minutes. Accordingly, PtAu/rGOA could be considered as a potential catalysts for CO oxidation at low temperature.

Isotope labelling study of CO oxidation-assisted epoxidation of propene. Implications for oxygen activation on Au catalysts

2010 ◽  
Vol 46 (21) ◽  
pp. 3791 ◽  
Author(s):  
Jian Jiang ◽  
Sean M. Oxford ◽  
Baosong Fu ◽  
Mayfair C. Kung ◽  
Harold H. Kung ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxygen Activation ◽  
Isotope Labelling

Visualization of oscillatory behaviour of Pt nanoparticles catalysing CO oxidation

2014 ◽  
Vol 13 (9) ◽  
pp. 884-890 ◽  
Author(s):  
S. B. Vendelbo ◽  
C. F. Elkjær ◽  
H. Falsig ◽  
I. Puspitasari ◽  
P. Dona ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Oscillatory Behaviour

Does enhanced oxygen activation always facilitate CO oxidation on gold clusters?

2015 ◽  
Vol 36 (29) ◽  
pp. 2177-2187 ◽  
Author(s):  
Krishnakanta Mondal ◽  
Arup Banerjee ◽  
Alessandro Fortunelli ◽  
Tapan K. Ghanty
Keyword(s):  
Co Oxidation ◽  
Oxygen Activation ◽  
Gold Clusters

In situ X-ray Absorption Analysis of ∼1.8 nm Dendrimer-Encapsulated Pt Nanoparticles during Electrochemical CO Oxidation

ChemPhysChem ◽  
2010 ◽  
Vol 11 (13) ◽  
pp. 2942-2950 ◽  
Author(s):  
Michael G. Weir ◽  
V. Sue Myers ◽  
Anatoly I. Frenkel ◽  
Richard M. Crooks
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Absorption Analysis ◽  
X Ray ◽  
X Ray Absorption

Metal-Support Interaction of Pt Nanoparticles with Ionically and Non-Ionically Conductive Supports for CO Oxidation

2012 ◽  
Vol 15 (3) ◽  
pp. E14 ◽  
Author(s):  
Rima J. Isaifan ◽  
Holly A. E. Dole ◽  
Emil Obeid ◽  
Leonardo Lizarraga ◽  
Philippe Vernoux ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

Modulation of the catalytic activity of Pt nanoparticles through charge-transfer interactions with metal–organic frameworks

2017 ◽  
Vol 53 (50) ◽  
pp. 6720-6723 ◽  
Author(s):  
Shotaro Yoshimaru ◽  
Masaaki Sadakiyo ◽  
Aleksandar Staykov ◽  
Kenichi Kato ◽  
Miho Yamauchi
Keyword(s):  
Catalytic Activity ◽  
Charge Transfer ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Metal Organic Frameworks ◽  
Pt Nanoparticles ◽  
Charge Transfer Interaction ◽  
Co Oxidation Reaction ◽  
Metal Organic ◽  
A Charge

A charge transfer interaction between Pt nanoparticles and MOFs modulated the catalytic activity of Pt for a CO oxidation reaction.

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 Raman Observation of Oxygen Activation and Reaction at Platinum–Ceria Interfaces during CO Oxidation

2021 ◽  
Vol 143 (38) ◽  
pp. 15635-15643
Author(s):  
Di-Ye Wei ◽  
Mu-Fei Yue ◽  
Si-Na Qin ◽  
Sa Zhang ◽  
Yuan-Fei Wu ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxygen Activation ◽  
In Situ Raman
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