High activity and negative apparent activation energy in low-temperature CO oxidation – present on Au/Mg(OH)2, absent on Au/TiO2

2017 ◽  
Vol 7 (18) ◽  
pp. 4145-4161 ◽  
Author(s):  
Y. Wang ◽  
D. Widmann ◽  
M. Wittmann ◽  
F. Lehnert ◽  
D. Gu ◽  
...  
Keyword(s):  
Activation Energy ◽  
Low Temperature ◽  
Ir Spectroscopy ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Reaction Behavior ◽  
Co Oxidation Reaction ◽  
Wide Range ◽  
Low Temperature Co Oxidation

Aiming at a better understanding of the unusual low-temperature CO oxidation reaction behavior on Au/Mg(OH)2 catalysts, we investigated this reaction mainly by combined kinetic and in situ IR spectroscopy measurements over a wide range of temperatures, from −90 °C to 200 °C.

Cu-Ce-O catalyst revisited for exceptional activity at low temperature CO oxidation reaction

2018 ◽  
Vol 354 ◽  
pp. 313-323 ◽  
Author(s):  
Abdallah F. Zedan ◽  
Kyriaki Polychronopoulou ◽  
Ayesha Asif ◽  
Siham Y. AlQaradawi ◽  
Amina S. AlJaber
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Co Oxidation Reaction ◽  
Low Temperature Co Oxidation

Controlled synthesis of Pd/CoOx–InOx nanofibers for low-temperature CO oxidation reaction

2019 ◽  
Vol 43 (37) ◽  
pp. 14872-14882 ◽  
Author(s):  
Xuebi Du ◽  
Weiliang Han ◽  
Zhicheng Tang ◽  
Jiyi Zhang
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Controlled Synthesis ◽  
Co Oxidation Reaction ◽  
Low Temperature Co Oxidation

Herein, we report a series of Pd/CoOx–InOx nanofibers with different morphologies (such as nanofibers, porous nanofibers and bead-like nanofibers) via electrospinning, annealing and impregnation methods.

scholarly journals Promotion of Pt/CeO2 catalyst by hydrogen treatment for low-temperature CO oxidation

RSC Advances ◽  
2019 ◽  
Vol 9 (46) ◽  
pp. 27002-27012 ◽  
Author(s):  
Asif Jan ◽  
Jisu Shin ◽  
Junsung Ahn ◽  
Sungeun Yang ◽  
Kyung Joong Yoon ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Oxygen Vacancy ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Hydrogen Treatment ◽  
Co Oxidation Reaction ◽  
Low Temperature Co Oxidation

Understanding on effects of Pt size and oxygen vacancy at CeO2 surface in Pt/CeO2 catalyst for CO oxidation reaction enables to boost catalytic activity.

scholarly journals CO Oxidation on Stepped Rh Surfaces: μm-Scale Versus Nanoscale

2019 ◽  
Vol 150 (3) ◽  
pp. 605-612 ◽  
Author(s):  
Y. Suchorski ◽  
I. Bespalov ◽  
J. Zeininger ◽  
M. Raab ◽  
M. Datler ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Reaction ◽  
Active Surface ◽  
Reaction Conditions ◽  
Miller Index ◽  
Co Oxidation Reaction ◽  
Catalytically Active ◽  
Field Emission Microscopy ◽  
Photoemission Electron

Abstract The catalytic CO oxidation reaction on stepped Rh surfaces in the 10−6 mbar pressure range was studied in situ on individual μm-sized high-Miller-index domains of a polycrystalline Rh foil and on nm-sized facets of a Rh tip, employing photoemission electron microscopy (PEEM) and field-ion/field-emission microscopy (FIM/FEM), respectively. Such approach permits a direct comparison of the reaction kinetics for crystallographically different regions under identical reaction conditions. The catalytic activity of the different Rh surfaces, particularly their tolerance towards poisoning by CO, was found to be strongly dependent on the density of steps and defects, as well as on the size (µm vs. nm) of the respective catalytically active surface. Graphic Abstract

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