Oxygen Vacancy Promoted O 2 Activation over Perovskite Oxide for Low-Temperature CO Oxidation
Central China Normal University · National University of Singapore
Abstract
The insights on the primary active oxygen specie and its relation with oxygen vacancy is essential for the design of low-temperature oxidation catalysts. Herein, oxygen vacancy-rich La0.8Sr0.2CoO3 with an ordered macroporous structure was integrated on the commercial ceramic monolith in large scale without additional adhesives via a facile in situ solution assembly. The constructed macropores not only contributed to the oxygen vacancy generation in catalyst preparation but also facilitated favorable mass transport during catalytic process. Combined with theoretical investigations and EPR, O2-TPD, H2-TPR observations, we revealed that monatomic oxygen ions (O–) are the primary oxygen active specie for…
Citation impact
- FWCI
- 16.79
- Percentile
- 100%
- References
- 68
Authors
15Topics & keywords
- Catalysis
- Oxygen
- Perovskite (structure)
- Oxide
- Chemistry
- Inorganic chemistry
- Materials science
- Photochemistry