Selective coupling of methyl chloride to vinyl chloride over dispersed NaVO3

doi:10.1016/S1872-2067(25)64732-2

Abstract

Abstract: The production of C₂H₃Cl from CH₃Cl (MCTV) represents a promising non-petroleum route for synthesizing C₂ alkenes from C₁ molecules. Exploration of new MCTV catalysts is crucial for advancing its sustainable chemical industry. In this study, we present NaVO₃as a ^•CH₂Cl radical surface-confined coupling center, demonstrating its superior performance in the selective coupling of methyl chloride to synthesize vinyl chloride. By incorporating NaVO₃onto the surface of CeO₂, the catalyst enables effective capture of ^•CH₂Cl radicals during the CH₃Cl oxidative pyrolysis and their subsequent conversion into C₂H₃Cl. We experimentally validate the controllable coupling capability of ^•CH₂Cl radicals over highly dispersed NaVO₃ through in-situ synchrotron-based vacuum ultraviolet photoionization mass spectrometry. The results demonstrate that the dispersion of NaVO₃ on the catalyst surface has a considerable impact on the reaction efficiency of ^•CH₂Cl radicals and the overall MCTV performance. This discovery holds substantial implications for the controlled C₁ radical transformation and provides a guidance for the design of catalysts for sustainable production of C₂H₃Cl.

Key words: Vinyl chloride, Methyl chloride, ^·CH₂Cl radicals, Surface coupling, NaVO₃

Fangwei Liu, Kunkun Wei, Youwen Chen, Jingbo Hu, Yue Wang, Chengyuan Liu, Yang Pan, Xutao Chen, Shihui Zou, Jie Fan. Selective coupling of methyl chloride to vinyl chloride over dispersed NaVO₃[J]. Chinese Journal of Catalysis, DOI: 10.1016/S1872-2067(25)64732-2.

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Selective coupling of methyl chloride to vinyl chloride over dispersed NaVO₃

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