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Mo-V-Nb-O-based catalysts for low-temperature selective oxidation of Cα-OH lignin model compounds
- Source :
- Frontiers of Materials Science; March 2020, Vol. 14 Issue: 1 p52-61, 10p
- Publication Year :
- 2020
-
Abstract
- Mo-V-Nb tri-component oxide catalysts were prepared and firstly used for the selective oxidation of Cα-OH lignin compounds. The catalytic performance of the composite oxides was obviously enhanced due to the synergistic effects of Mo and V elements. Mo5-xVxO14phase with a variable Mo/V ratio provided suitable active sites for the oxidative dehydrogenation (ODH) of Cα-OH lignin model compound. The optimized Mo-V-Nb molar composition was confirmed as Mo0.61V0.31Nb0.08Ox/TiO2, which exhibited the prominent catalytic activity with the turnover frequency of 1.04×10-3mmol·g(cat)-1·s-1. Even at room temperature, the catalysts showed highly-efficient ODH reaction activities. The active phase for selective oxidation reaction and the inhibiting effect of α-MoO3phase were also discussed in the study.
Details
- Language :
- English
- ISSN :
- 2095025X and 20950268
- Volume :
- 14
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Frontiers of Materials Science
- Publication Type :
- Periodical
- Accession number :
- ejs52236972
- Full Text :
- https://doi.org/10.1007/s11706-020-0494-8