Facilitating the reduction of V-O bonds on VO x /ZrO2 catalysts for non-oxidative propane dehydrogenation.

Chemical Science
Yufei XieJinlong Gong

Abstract

Supported vanadium oxide is a promising catalyst in propane dehydrogenation due to its competitive performance and low cost. Nevertheless, it remains a grand challenge to understand the structure-performance correlation due to the structural complexity of VO x -based catalysts in a reduced state. This paper describes the structure and catalytic properties of the VO x /ZrO2 catalyst. When using ZrO2 as the support, the catalyst shows six times higher turnover frequency (TOF) than using commercial γ-Al2O3. Combining H2-temperature programmed reduction, in situ Raman spectroscopy, X-ray photoelectron spectroscopy and theoretical studies, we find that the interaction between VO x and ZrO2 can facilitate the reduction of V-O bonds, including V[double bond, length as m-dash]O, V-O-V and V-O-Zr. The promoting effect could be attributed to the formation of low coordinated V species in VO x /ZrO2 which is more active in C-H activation. Our work provides a new insight into understanding the structure-performance correlation in VO x ...Continue Reading

References

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Citations

Jan 26, 2021·Chemical Society Reviews·Sai ChenJinlong Gong
Feb 19, 2021·Chemical Society Reviews·Chunyi Li, Guowei Wang
Mar 24, 2021·Journal of Colloid and Interface Science·Yansu WangZhong-Yong Yuan
May 12, 2021·Chemical Society Reviews·Scott R DochertyChristophe Copéret

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Methods Mentioned

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