Activation of Molecular Oxygen and the Nature of the Active Oxygen Species for CO Oxidation on Oxide Supported Au Catalysts

2014 ◽  
Vol 47 (3) ◽  
pp. 740-749 ◽  
Author(s):  
D. Widmann ◽  
R. J. Behm
Keyword(s):  
Co Oxidation ◽  
Molecular Oxygen ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species

scholarly journals Correction: Activity enhancement of Pt/MnOx catalyst by novel β-MnO2 for low-temperature CO oxidation: study of the CO–O2 competitive adsorption and active oxygen species

2020 ◽  
Vol 10 (20) ◽  
pp. 7067-7067
Author(s):  
Ningqiang Zhang ◽  
Lingcong Li ◽  
Rui Wu ◽  
Liyun Song ◽  
Lirong Zheng ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Competitive Adsorption ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Oxidation Study ◽  
Low Temperature Co Oxidation ◽  
Activity Enhancement

Correction for ‘Activity enhancement of Pt/MnOx catalyst by novel β-MnO2 for low-temperature CO oxidation: study of the CO–O2 competitive adsorption and active oxygen species’ by Ningqiang Zhang et al., Catal. Sci. Technol., 2019, 9, 347–354, DOI: 10.1039/C8CY01879K.

Direct Synthesis of Enones by Visible-Light-Promoted Oxygenation of Trisubstituted Olefins Using Molecular Oxygen

Synlett ◽  
2020 ◽  
Vol 31 (14) ◽  
pp. 1372-1377
Author(s):  
Shinji Harada ◽  
Daiki Matsuda ◽  
Takahiro Morikawa ◽  
Atsushi Nishida
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Active Oxygen Species ◽  
Direct Synthesis ◽  
Reaction System ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Mechanistic Studies ◽  
Trisubstituted Olefins ◽  
One Step

A one-step synthesis of enones from olefins is described. The reaction was performed under visible-light irradiation in the presence of molecular oxygen and a photocatalyst. The reaction proceeded with various types of trisubstituted olefins to give enones in good yields with high regioselectivity. In particular, oxygen- and nitrogen-containing functional groups, heteroaromatic rings, and cyclopropanes were tolerated. Mechanistic studies and previous reports indicated that the active oxygen species generated in the reaction system is singlet oxygen.

scholarly journals Fine cubic Cu2O nanocrystals as highly selective catalyst for propylene epoxidation with molecular oxygen

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Xiong ◽  
Xiang-Kui Gu ◽  
Zhenhua Zhang ◽  
Peng Chai ◽  
Yijing Zang ◽  
...  
Keyword(s):  
Molecular Oxygen ◽  
Partial Oxidation ◽  
Propylene Oxide ◽  
High Selectivity ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Lattice Oxygen ◽  
Oxygen Species ◽  
Propylene Epoxidation ◽  
Selective Catalyst

AbstractPropylene epoxidation with O2 to propylene oxide is a very valuable reaction but remains as a long-standing challenge due to unavailable efficient catalysts with high selectivity. Herein, we successfully explore 27 nm-sized cubic Cu2O nanocrystals enclosed with {100} faces and {110} edges as a highly selective catalyst for propylene epoxidation with O2, which acquires propylene oxide selectivity of more than 80% at 90–110 °C. Propylene epoxidation with weakly-adsorbed O2 species at the {110} edge sites exhibits a low barrier and is the dominant reaction occurring at low reaction temperatures, leading to the high propylene oxide selectivity. Such a weakly-adsorbed O2 species is not stable at high reaction temperatures, and the surface lattice oxygen species becomes the active oxygen species to participate in propylene epoxidation to propylene oxide and propylene partial oxidation to acrolein at the {110} edge sites and propylene combustion to CO2 at the {100} face sites, which all exhibit high barriers and result in decreased propylene oxide selectivity.

scholarly journals Chemiluminescent Detection of Active Oxygen Species, Singlet Molecular Oxygen and Superoxide, Using Cypridina Luciferin Analogues.

1991 ◽  
Vol 57 (9) ◽  
pp. 1711-1715 ◽  
Author(s):  
Nobutaka Suzuki ◽  
Kazue Ogawa ◽  
Binkoh Yoda ◽  
Tateo Nomoto ◽  
Humio Inaba ◽  
...  
Keyword(s):  
Molecular Oxygen ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Singlet Molecular Oxygen ◽  
Chemiluminescent Detection
Sign in / Sign up

Export Citation Format

Share Document