1. Mo-V-Nb-O-based catalysts for low-temperature selective oxidation of Cα-OH lignin model compounds.
- Author
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Zhang, Lu-Lu, Hao, Kun, Wang, Rui-Kai, Ma, Xiu-Qiang, Liu, Tong, Song, Liang, Yu, Qing, Wang, Zhong-Wei, Zeng, Jian-Min, and Zeng, Rong-Chang
- Abstract
Mo-V-Nb tri-component oxide catalysts were prepared and firstly used for the selective oxidation of C
α -OH lignin compounds. The catalytic performance of the composite oxides was obviously enhanced due to the synergistic effects of Mo and V elements. Mo5-x Vx O14 phase 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 Mo0.61 V0.31 Nb0.08 Ox /TiO2 , which exhibited the prominent catalytic activity with the turnover frequency of 1.04×10-3 mmol·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-MoO3 phase were also discussed in the study. [ABSTRACT FROM AUTHOR]- Published
- 2020
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