Support Effect of Arc Plasma Deposited Pt Nanoparticles/TiO2Substrate on Catalytic Activity of CO Oxidation

2012 ◽  
Vol 116 (45) ◽  
pp. 24054-24059 ◽  
Author(s):  
Kamran Qadir ◽  
Sang Hoon Kim ◽  
Sun Mi Kim ◽  
Heonphil Ha ◽  
Jeong Young Park
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Support Effect ◽  
Arc Plasma

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.

Facile synthesis of PbTiO3 truncated octahedra via solid-state reaction and their application in low-temperature CO oxidation by loading Pt nanoparticles

2014 ◽  
Vol 2 (24) ◽  
pp. 9035-9039 ◽  
Author(s):  
Simin Yin ◽  
Yihan Zhu ◽  
Zhaohui Ren ◽  
Chunying Chao ◽  
Xiang Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Low Temperature ◽  
Co Oxidation ◽  
Solid State Reaction ◽  
Pt Nanoparticles ◽  
Facile Synthesis ◽  
Low Temperature Co Oxidation

Pt NPs have been investigated to selectively nucleate on the {111} facets of PbTiO3 truncated octahedra, exhibiting a remarkable low-temperature catalytic activity towards CO oxidation with a 100% conversion at ∼50 °C.

Chemical Doping of TiO2 with Nitrogen and Fluorine and Its Support Effect on Catalytic Activity of CO Oxidation

2014 ◽  
Vol 144 (8) ◽  
pp. 1411-1417 ◽  
Author(s):  
Kalyan C. Goddeti ◽  
Sun Mi Kim ◽  
Young Keun Lee ◽  
Sang Hoon Kim ◽  
Jeong Young Park
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Support Effect ◽  
Chemical Doping

Pt nanoparticles inside the mesopores of TiO2–MCM-48: synthesis, characterization and catalytic activity for CO oxidation

2009 ◽  
Vol 44 (24) ◽  
pp. 6701-6709 ◽  
Author(s):  
Vaishali V. Narkhede ◽  
Andrea De Toni ◽  
Vijay S. Narkhede ◽  
Markus Reichinger ◽  
A. Birkner ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Pt Nanoparticles

Catalytic activity of Au/TiO2 and Pt/TiO2 nanocatalysts prepared with arc plasma deposition under CO oxidation

2013 ◽  
Vol 454 ◽  
pp. 53-58 ◽  
Author(s):  
Sang Hoon Kim ◽  
Chan-Ho Jung ◽  
Nruparaj Sahu ◽  
Dahee Park ◽  
Jung Yeul Yun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Plasma Deposition ◽  
Arc Plasma

Effect of thermal ageing on the structure and catalytic activity of Pd/CeO2 prepared using arc-plasma process

2014 ◽  
Vol 4 (9) ◽  
pp. 2990-2996 ◽  
Author(s):  
Satoshi Hinokuma ◽  
Hiroaki Fujii ◽  
Yasuo Katsuhara ◽  
Keita Ikeue ◽  
Masato Machida
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Thermal Ageing ◽  
Arc Plasma ◽  
Plasma Process ◽  
Oxidation Activity

High CO oxidation activity of Pd/CeO2 as prepared by using an arc-plasma process was lost by thermal ageing at 600 °C in air, whereas further ageing at 900 °C enhanced significantly the activity, exceeding that of the as-prepared catalyst.

CO Oxidation of Au–Pt Nanostructures: Enhancement of Catalytic Activity of Pt Nanoparticles by Au

2009 ◽  
Vol 134 (1-2) ◽  
pp. 45-50 ◽  
Author(s):  
Yuan Luo ◽  
Hyun Ook Seo ◽  
Kwang-Dae Kim ◽  
Myoung Joo Kim ◽  
Wei Sheng Tai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Pt Nanoparticles

scholarly journals CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131 ◽  
Author(s):  
Rola Mohammad Al Soubaihi ◽  
Khaled Mohammad Saoud ◽  
Myo Tay Zar Myint ◽  
Mats A. Göthelid ◽  
Joydeep Dutta
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Active Sites ◽  
Bond Activation ◽  
Dissociative Adsorption ◽  
High Catalytic Activity ◽  
Good Catalytic Activity ◽  
Pretreatment Conditions ◽  
Oxidation Efficiency

Carbon monoxide (CO) oxidation is considered an important reaction in heterogeneous industrial catalysis and has been extensively studied. Pd supported on SiO2 aerogel catalysts exhibit good catalytic activity toward this reaction owing to their CO bond activation capability and thermal stability. Pd/SiO2 catalysts were investigated using carbon monoxide (CO) oxidation as a model reaction. The catalyst becomes active, and the conversion increases after the temperature reaches the ignition temperature (Tig). A normal hysteresis in carbon monoxide (CO) oxidation has been observed, where the catalysts continue to exhibit high catalytic activity (CO conversion remains at 100%) during the extinction even at temperatures lower than Tig. The catalyst was characterized using BET, TEM, XPS, TGA-DSC, and FTIR. In this work, the influence of pretreatment conditions and stability of the active sites on the catalytic activity and hysteresis is presented. The CO oxidation on the Pd/SiO2 catalyst has been attributed to the dissociative adsorption of molecular oxygen and the activation of the C-O bond, followed by diffusion of adsorbates at Tig to form CO2. Whereas, the hysteresis has been explained by the enhanced stability of the active site caused by thermal effects, pretreatment conditions, Pd-SiO2 support interaction, and PdO formation and decomposition.

scholarly journals On the Effects of Doping on the Catalytic Performance of (La,Sr)CoO3. A DFT Study of CO Oxidation

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 312 ◽  
Author(s):  
Antonella Glisenti ◽  
Andrea Vittadini
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Formation Energy ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Energy Profiles ◽  
High Concentrations ◽  
3D Impurities

The effects of modifying the composition of LaCoO3 on the catalytic activity are predicted by density functional calculations. Partially replacing La by Sr ions has benefical effects, causing a lowering of the formation energy of O vacancies. In contrast to that, doping at the Co site is less effective, as only 3d impurities heavier than Co are able to stabilize vacancies at high concentrations. The comparison of the energy profiles for CO oxidation of undoped and of Ni-, Cu-m and Zn-doped (La,Sr)CoO3(100) surface shows that Cu is most effective. However, the effects are less spectacular than in the SrTiO3 case, due to the different energetics for the formation of oxygen vacancies in the two hosts.

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