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 activity of thermally stable Fe–Cu/CeO2 catalysts prepared by dual-mode arc-plasma process

2015 ◽  
Vol 5 (8) ◽  
pp. 3945-3952 ◽  
Author(s):  
Satoshi Hinokuma ◽  
Noriko Yamashita ◽  
Yasuo Katsuhara ◽  
Hayato Kogami ◽  
Masato Machida
Keyword(s):  
Co Oxidation ◽  
Thermal Aging ◽  
Arc Plasma ◽  
Thermally Stable ◽  
Plasma Process ◽  
Dual Mode ◽  
Oxidation Activity

Fe–Cu bimetal nanoparticles were prepared by the dual-mode arc-plasma process. The CO oxidation activity of Fe–Cu/CeO2 was enhanced by thermal aging at 900 °C. CO oxidation over aged Fe–Cu/CeO2 proceeded via the Mars–van Krevelen mechanism.

Preparation of TiO2-supported twinned gold nanoparticles by CO treatment and their CO oxidation activity

2015 ◽  
Vol 51 (87) ◽  
pp. 15823-15826 ◽  
Author(s):  
Junya Ohyama ◽  
Taiki Koketsu ◽  
Yuta Yamamoto ◽  
Shigeo Arai ◽  
Atsushi Satsuma
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
High Catalytic Activity ◽  
Oxidation Activity

Au/TiO2 prepared by CO treatment showed high catalytic activity for CO oxidation due to twinned structure of Au nanoparticles.

scholarly journals Origin of the catalytic activity of face-centered-cubic ruthenium nanoparticles determined from an atomic-scale structure

2016 ◽  
Vol 18 (44) ◽  
pp. 30622-30629 ◽  
Author(s):  
L. S. R. Kumara ◽  
Osami Sakata ◽  
Shinji Kohara ◽  
Anli Yang ◽  
Chulho Song ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Scale Structure ◽  
Atomic Scale ◽  
Face Centered Cubic ◽  
Ruthenium Nanoparticles ◽  
Oxidation Activity ◽  
Atomic Scale Structure ◽  
Face Centered

The 3D configuration models of novel fcc and conventional hcp ruthenium nanoparticles are studied to elucidate their CO oxidation activity.

scholarly journals The influence of CePO4 nanorods on the CO oxidation activity of Au/GdPO4-rods

RSC Advances ◽  
2018 ◽  
Vol 8 (39) ◽  
pp. 21699-21711
Author(s):  
Yu Huanhuan ◽  
Chen Fayun ◽  
Zhubaolin Zhubaolin ◽  
Huang Weiping ◽  
Zhang Shoumin
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Co Oxidation ◽  
Oxidation Activity ◽  
Temperature Resistance ◽  
Ultrasound Method ◽  
High Temperature Resistance ◽  
Good Catalytic Activity ◽  
Content Of Gold ◽  
Good Support

A CePO4–GdPO4 composite was prepared by a general ultrasound method and could be a good support for gold nanocatalysts. Au/CePO4–GdPO4 catalysts with a low content of gold showed good catalytic activity, high temperature resistance and stability for CO oxidation.

Structure and CO Oxidation Activity of Pt/CeO2 Catalysts Prepared Using Arc-Plasma

2012 ◽  
Vol 85 (1) ◽  
pp. 144-149 ◽  
Author(s):  
Satoshi Hinokuma ◽  
Madoka Okamoto ◽  
Eriko Ando ◽  
Keita Ikeue ◽  
Masato Machida
Keyword(s):  
Co Oxidation ◽  
Arc Plasma ◽  
Oxidation Activity

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

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

A mullite oxide catalyst of SmMn2O5 for three-way catalysis: synthesis, characterization, and catalytic activity evaluation

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 65950-65959 ◽  
Author(s):  
Pengfei Zhao ◽  
Pengfei Yu ◽  
Zijian Feng ◽  
Rong Chen ◽  
Liwei Jia ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Oxide Catalyst ◽  
Oxidation Activity ◽  
Activity Evaluation ◽  
Co Conversion ◽  
Three Way Catalysis

CO conversion as a function of temperature for SMO and LCO is shown in the graphical abstract image. SMO reached 95% conversion at 150 °C and showed a better CO oxidation activity than LCO.

Preparation of Gold Nanoparticles Supported on Montmorillonite and its Catalytic Activity for CO Oxidation

2014 ◽  
Vol 955-959 ◽  
pp. 51-55
Author(s):  
Ting Ting Hu ◽  
Lin Hua Zhu
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Fluorescence Analysis ◽  
X Ray Diffraction ◽  
Oxidation Activity ◽  
X Ray ◽  
Transmission Electron ◽  
Gold Precursor

Gold catalysts supported on Na-MMT and Al-PILM noted as Au/Na-MMT and Au/Al-PILM respectively were prepared using Au(en)2Cl3 as precursor, and the catalytic oxidation activity for CO oxidation was investigated. The influence of different carriers on the conversion of CO was discussed. The phase of catalysts, the actual gold loading and the morphology of gold nanoparticles were characterized by X-ray diffraction(XRD), X-ray fluorescence analysis(XRF) and Transmission electron microscopy(TEM). The results showed that Au/Al-PILM exhibited higher catalytic activity for the oxidation reaction of CO, and 100% conversion of CO was achieved at reaction temperature of 250°C when gold precursor was loaded on the Al-PILM carrier at 60°Cand calcined it at 450°C for 1h.

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