Different Reactivity of the Various Platinum Oxides and Chemisorbed Oxygen in CO Oxidation on Pt(111)

2014 ◽  
Vol 136 (17) ◽  
pp. 6340-6347 ◽  
Author(s):  
Daniel Miller ◽  
Hernan Sanchez Casalongue ◽  
Hendrik Bluhm ◽  
Hirohito Ogasawara ◽  
Anders Nilsson ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Chemisorbed Oxygen ◽  
Platinum Oxides

Selectivity of chemisorbed oxygen in C–H bond activation and CO oxidation and kinetic consequences for CH4–O2 catalysis on Pt and Rh clusters

2011 ◽  
Vol 283 (1) ◽  
pp. 10-24 ◽  
Author(s):  
Ya-Huei (Cathy) Chin ◽  
Corneliu Buda ◽  
Matthew Neurock ◽  
Enrique Iglesia
Keyword(s):  
Co Oxidation ◽  
Bond Activation ◽  
Chemisorbed Oxygen

scholarly journals “Storage-Discharge” Ethanol Cold Plasma for Synthesizing High Performance Pd/Al2O3 Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 907
Author(s):  
Hongyang Wang ◽  
Tengda Zhang ◽  
Yufa Zhou ◽  
Xiuling Zhang ◽  
Lanbo Di
Keyword(s):  
Co Oxidation ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Residual Carbon ◽  
Oxygen Species ◽  
Supported Metal Catalysts ◽  
Oxidation Activity ◽  
X Ray ◽  
Chemisorbed Oxygen ◽  
Novel Method

Atmospheric pressure cold plasma is an environmentally friendly and novel method to synthesize supported metal catalysts, which usually uses active hydrogen species to reduce metal ions. Ethanol is a hydrogen-rich renewable liquid hydrogen source, and it is more convenient to store and transport than H2. In this study, a “storage-discharge” ethanol cold plasma was used to prepare Pd/Al2O3-EP catalysts, and the obtained catalysts are used for CO oxidation. The complete oxidation of CO temperature (T100) over Pd/Al2O3-EP was 145 °C, which was comparable to the performance of Pd/Al2O3-HP that was synthesized by atmospheric pressure hydrogen cold plasma. Pd/Al2O3-EP-C obtained by calcining Pd/Al2O3-EP at 450 °C for 2 h in air atmosphere in order to remove residual carbon species showed much higher CO oxidation activity, and T100 was 130 °C. The Pd/Al2O3 catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron diffraction (XPS), Brunauer–Emmett–Teller (BET), and transmission electron microscopy (TEM), and the structure-performance relationship was analyzed. The results indicate that the “storage-discharge” ethanol cold plasma can reduce the Pd precursor ions into metallic Pd state, and the dissociation of ethanol forms lots of highly active chemisorbed oxygen species, which can enhance the performance of Pd/Al2O3-EP for CO oxidation. In contrast, Pd/Al2O3-EP-C shows much higher CO oxidation activity, which is mainly attributed to the removal of the residual carbon species, and the exposure of more Pd active sites and chemisorbed oxygen species. The “storage-discharge” ethanol cold plasma is a safe and efficient novel method for synthesizing supported Pd catalysts, and it has important potential for the preparation and application of supported metal catalysts.

CO oxidation over Ru(0001) at near-atmospheric pressures: From chemisorbed oxygen to RuO2

2009 ◽  
Vol 603 (8) ◽  
pp. 1126-1134 ◽  
Author(s):  
Feng Gao ◽  
Yilin Wang ◽  
Yun Cai ◽  
D. Wayne Goodman
Keyword(s):  
Co Oxidation ◽  
Chemisorbed Oxygen

Catalytic CO Oxidation on Unreconstructed Cu(110) by Reactive As-Adsorbed Oxygen Atoms below 230 K

1996 ◽  
Vol 100 (3) ◽  
pp. 1048-1054 ◽  
Author(s):  
Tsuyoshi Sueyoshi ◽  
Takehiko Sasaki ◽  
Yasuhiro Iwasawa
Keyword(s):  
Co Oxidation ◽  
Adsorbed Oxygen ◽  
Catalytic Co Oxidation ◽  
Oxygen Atoms

Effects of H2O and O2 on CO Oxidation using Dielectric Barrier Discharge

2013 ◽  
Vol 133 (12) ◽  
pp. 642-647 ◽  
Author(s):  
Hitomi Kawakami ◽  
Akinori Zukeran ◽  
Koji Yasumoto ◽  
Yoshiyasu Ehara ◽  
Toshiaki Yamamoto
Keyword(s):  
Co Oxidation ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Dielectric Barrier

Bacterial Co-oxidation of Natural Humic Substances in the Presence of Glucose

2004 ◽  
Vol 40 (1) ◽  
pp. 8
Author(s):  
N. Dzyuban ◽  
E. S. Bikbulatov ◽  
E. M. Bikbulatova ◽  
I. A. Kuznetsova
Keyword(s):  
Co Oxidation ◽  
Humic Substances

CO OXIDATION ON THIN Pt CRYSTALS : STOICHIOMETRIC AND MATHEMATICAL MODELS

2007 ◽  
Vol 21 (0) ◽  
pp. 272-281
Author(s):  
І. О. Пеняк ◽  
Б. В. Гнатів ◽  
М. В. Токарчук
Keyword(s):  
Mathematical Models ◽  
Co Oxidation

Tuning the Activities of Cu2O Nanostructures via the Oxide-Metal Interaction

2019 ◽  
Author(s):  
Wugen Huang ◽  
qingfei liu ◽  
Zhiwen Zhou ◽  
Yangsheng Li ◽  
Yong Wang ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Catalysis ◽  
Atomic Scale ◽  
Scanning Tunneling ◽  
Oxidation Reactions ◽  
Tunneling Microscopy ◽  
Temperature Oxidation ◽  
Metal Interaction ◽  
Tremendous Importance ◽  
Oxygen Atoms

Despite tremendous importance in catalysis, the design and improvement of the oxide- metal interface has been hampered by the limited understanding on the nature of interfacial sites, as well as the oxide-metal interaction (OMI). Through the construction of well-defined Cu<sub>2</sub>O-Pt, Cu<sub>2</sub>O-Ag, Cu<sub>2</sub>O-Au interfaces, we found that Cu<sub>2</sub>O Nanostructures (NSs) on Pt exhibit much lower thermal stability than on Ag and Au, although they show the same surface and edge structures, as identified by element-specific scanning tunneling microscopy (ES-STM) images. The activities of the Cu<sub>2</sub>O-Pt and Cu<sub>2</sub>O-Au interfaces for CO oxidation were further compared at the atomic scale and showed in general that the interface with Cu<sub>2</sub>O NSs could annihilate the CO-poisoning problem suffered by Pt group metals and enhance the interaction with O<sub>2</sub>, which is a limiting step for CO oxidation catalysis on group IB metals. While both interfaces could react with CO at room temperature, the OMI was found to determine the reactivity of supported Cu<sub>2</sub>O NSs by 1) tuning the activity of interfacial oxygen atoms and 2) stabilizing oxygen vacancies or vice versa, the dissociated oxygen atoms at the interface. Our study provides new insight for OMI and for the development of Cu-based catalysts for low temperature oxidation reactions.

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