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

2019 ◽  
Vol 9 (2) ◽  
pp. 347-354 ◽  
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 ◽  
Lattice Oxygen ◽  
Oxygen Species ◽  
Oxidation Study ◽  
Low Temperature Co Oxidation ◽  
Activity Enhancement

Interfacial lattice oxygen in Pt/MnOx could act as the active oxygen species for low-temperature CO oxidation.

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.

Engineering the Nucleophilic Active Oxygen Species in CuTiOx for Efficient Low-Temperature Propene Combustion

2020 ◽  
Vol 54 (23) ◽  
pp. 15476-15488
Author(s):  
Yarong Fang ◽  
Li Li ◽  
Ji Yang ◽  
Son Hoang ◽  
Liming Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species

Potassium-incorporated manganese oxide enhances the activity and durability of platinum catalyst for low-temperature CO oxidation

2021 ◽  
Author(s):  
Xuelan Yan ◽  
Tao Gan ◽  
Shaozhen Shi ◽  
Juan Du ◽  
Guohao Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Manganese Oxide ◽  
Platinum Catalyst ◽  
Potassium Ions ◽  
Oxygen Species ◽  
Surface Oxygen ◽  
Highly Efficient ◽  
Low Temperature Co Oxidation

Potassium ions in the tunnel of MnO2 is demonstrated significantly enhancing the activity of surface oxygen species, which is favorable for preparing highly efficient Pt-based catalysts for low-temperature CO oxidation.

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.

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