Selective coupling of methyl chloride to vinyl chloride over dispersed NaVO3

The production of C 2 H 3 Cl from CH 3 Cl (MCTV) represents a promising non-petroleum route for synthesizing C 2 alkenes from C 1 molecules. Exploration of new MCTV catalysts is crucial for advancing sustainable chemical production. In this study, we present NaVO 3 as a surface-confined coupling center for • CH 2 Cl radicals, demonstrating its superior performance in the selective coupling of methyl chloride to synthesize vinyl chloride. By incorporating NaVO 3 onto the surface of CeO 2 , the catalyst enables effective capture of • CH 2 Cl radicals during the CH 3 Cl oxidative pyrolysis and their subsequent conversion into C 2 H 3 Cl. We experimentally validate the capability of highly dispersed NaVO 3 to controllably couple • CH 2 Cl radicals through in-situ synchrotron-based vacuum ultraviolet photoionization mass spectrometry. The results demonstrate that the dispersion of NaVO 3 on the catalyst surface has a considerable impact on the reaction efficiency of • CH 2 Cl radicals and the overall MCTV performance. This discovery holds substantial implications for the controlled C 1 radical transformation and provides a guidance for the design of catalysts for sustainable production of C 2 H 3 Cl.