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Selective Oxidation of Alkyl Hydrocarbon with Molecular Oxygen Catalyzed by Surface-Amine-Modified Cobalt-Silicon Mixed Nano Oxides.
- Source :
-
Catalysis Letters . Aug2024, Vol. 154 Issue 8, p4708-4718. 11p. - Publication Year :
- 2024
-
Abstract
- With a one-step reverse-phase microemulsion method, surface-amine-modified cobalt-silicon mixed oxide (BA-Co-SiO2) was successfully prepared, which was characterized by SEM, FTIR, UV-Vis DRS, XPS, TG-DTA, N2 adsorption-desorption, and hydrophobicity/lipophilicity measurement, etc. In-situ introduction of organic amine on the surface caused three positive effects on the improvement of the catalytic oxidation ability: the first one is to generate a higher specific surface area; the second one is to modify the surface of the catalyst to be more hydrophobic and lipophilic; and the third one is to facilitate the generation of Co(III) with a higher valence state that owns a stronger oxidation ability. Under the solvent-free conditions and with molecular oxygen as the oxidant, BA-Co-SiO2 showed a much higher catalytic activity for the selective oxidation of ethylbenzene compared with Co-SiO2 without amine. The reported results supplied a good reference for designing the efficient catalyst through the modification of the surface property and catalyst's structure with a simple in-situ method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1011372X
- Volume :
- 154
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Catalysis Letters
- Publication Type :
- Academic Journal
- Accession number :
- 178806870
- Full Text :
- https://doi.org/10.1007/s10562-024-04687-x