Active Phase of FeOx/Pt Catalysts in Low-Temperature CO Oxidation and Preferential Oxidation of CO Reaction

2017 ◽  
Vol 121 (19) ◽  
pp. 10398-10405 ◽  
Author(s):  
Hao Chen ◽  
Yun Liu ◽  
Fan Yang ◽  
Mingming Wei ◽  
Xinfei Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Active Phase ◽  
Pt Catalysts ◽  
Preferential Oxidation ◽  
Oxidation Of Co ◽  
Preferential Oxidation Of Co ◽  
Low Temperature Co Oxidation

Preferential Oxidation of CO over Pt Catalysts Supported on Mesoporous Aluminosilicates in the Presence of H2

2010 ◽  
Vol 658 ◽  
pp. 37-40
Author(s):  
Ryosuke Nakanishi ◽  
Keiichi Inukai ◽  
Masaki Maeda ◽  
Masaya Suzuki ◽  
Yutaka Tai
Keyword(s):  
Low Temperature ◽  
Polymer Electrolyte Fuel Cells ◽  
Stable Operation ◽  
Pt Catalysts ◽  
Anode Catalyst ◽  
Preferential Oxidation ◽  
Oxidation Of Co ◽  
Mesoporous Aluminosilicates ◽  
Preferential Oxidation Of Co ◽  
Increasing Temperature

. Preferential oxidation (PROX) of CO in the presence of H2 is an important reaction to maintain stable operation of polymer electrolyte fuel cells (PEFCs) since their anode catalyst can be poisoned by trace amount of CO. In this study, we examined PROX reactions mediated by Pt catalysts prepared using several mesoporous silica and aluminosilicate supports such as imogolite (IM), allophane (AP), silica aerogel (SAG), and an amorphous hydroxyl aluminosilicate developed in our research group (HAS). The selectivity of CO oxidation gradually decreased from 80 to 60 % with increasing temperature from 323 to 473 K for Pt/HAS catalyst whereas it increased with temperature from 10 to 40 % for Pt/IM, Pt/AP, Pt/SAG catalysts. These results indicate that Pt supported on HAS may be effective for low-temperature PROX reactions.

Why Au and Cu Are More Selective Than Pt for Preferential Oxidation of CO at Low Temperature

2004 ◽  
Vol 93 (1/2) ◽  
pp. 93-100 ◽  
Author(s):  
S. Kandoi ◽  
A.A. Gokhale ◽  
L.C. Grabow ◽  
J.A. Dumesic ◽  
M. Mavrikakis
Keyword(s):  
Low Temperature ◽  
Preferential Oxidation ◽  
Oxidation Of Co ◽  
Preferential Oxidation Of Co

scholarly journals The TiO2 topotactic transformation assisted trapping of an atomically dispersed Pt catalyst for low temperature CO oxidation

RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16774-16778
Author(s):  
Yunping He ◽  
Xue-Zhi Song ◽  
Feng Ding ◽  
Xiaolan Kang ◽  
Feifei Sun ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Rough Surface ◽  
Pt Catalyst ◽  
Pt Catalysts ◽  
Low Temperature Co Oxidation ◽  
Topotactic Transformation

Atomically dispersed Pt catalysts are deposited on the rough surface of TiO2, which is synthesized via topotactic transformation from a NH4TiOF3 mesocrystal.

High-surface-area activated red mud supported Co3O4 catalysts for efficient catalytic oxidation of CO

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94748-94755 ◽  
Author(s):  
Zhong-Pan Hu ◽  
Hui Zhao ◽  
Ze-Min Gao ◽  
Zhong-Yong Yuan
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
Red Mud ◽  
High Surface ◽  
High Surface Area ◽  
High Catalytic Activity ◽  
Oxidation Of Co ◽  
Catalytic Oxidation Of Co ◽  
Low Temperature Co Oxidation

Red mud is activated and employed as the support of Co3O4 catalysts, exhibiting high catalytic activity for low-temperature CO oxidation.

scholarly journals Highly dispersed Pt+ on Ti Ce(1−)O2 as an active phase in preferential oxidation of CO

2016 ◽  
Vol 180 ◽  
pp. 169-178 ◽  
Author(s):  
S. Rico-Francés ◽  
E.O. Jardim ◽  
T.A. Wezendonk ◽  
F. Kapteijn ◽  
J. Gascon ◽  
...  
Keyword(s):  
Active Phase ◽  
Preferential Oxidation ◽  
Oxidation Of Co ◽  
Preferential Oxidation Of Co ◽  
Highly Dispersed

CeO2/CuO Catalysts with Na2CO3 as Precipitant for Preferential Oxidation of CO

2013 ◽  
Vol 805-806 ◽  
pp. 1297-1301 ◽  
Author(s):  
Shang Hong Zeng ◽  
Tian Jia Chen ◽  
Hai Quan Su ◽  
Quan Man ◽  
Wen Li Zhang
Keyword(s):  
Co Oxidation ◽  
Hydrothermal Method ◽  
Molar Ratio ◽  
Preferential Oxidation ◽  
Oxidation Of Co ◽  
Preferential Oxidation Of Co ◽  
Highly Dispersed ◽  
Higher Temperature ◽  
Lower Temperature

The CeO2/CuO catalysts were synthesized by the hydrothermal method. The study shows that the particle-like CeO2 can self-assemble into the rod-like CeO2 during the hydrothermal procedure and the rods of CeO2 become shorter with the decrease of Ce/Cu molar ratio. The highly dispersed CuO is favorable for CO oxidation at lower temperature, and the bulk CuO can help CO oxidation at higher temperature due to the limitation of reduction.

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