Facet-Induced Strong Metal Chloride−Support Interaction over CuCl₂/γ-Al₂O₃ Catalyst to Enhance Ethylene Oxychlorination Performance

The supported transition metal oxides, chlorides, carbides, and so forth (MXn), represent an important type of catalyst for redox processes. MXn–support interaction, analogous to metal-support plays a critical role in reactions. Herein, we illustrated the nature monolayer CuCl2–γ-Al2O3 its catalytic consequence induced by support facets ethylene oxychlorination. Kinetic theoretical studies, combined with operando spectroscopy demonstrated effects interaction between CuCl2 various exposed γ-Al2O3 (110) (100). Al2O3(110) shows better performance high activity, selectivity, stability. (111) facet deactivated rapidly, dichloride (EDC) selectivity decreased 30%; while activity on was much higher, EDC can be well kept at >99% long-term stability test. multi-scale in-depth characterizations revealed concept chloride–support determining performance. We believe this method tuning reactivity active species manipulating their coordination surfaces as ligand shall spark inspiration other applications.