Copper integrative catalytic pairs with mixed-valence Cu²⁺-Cu³⁺ Species for selective alkyne conversion.

ABSTRACT: Achieving specific orbital activation of C ≡ C by controlling the precise atomic architecture of supported metals is crucial for the selective transformation of alkynes. However, its physical mechanism remains a subject of debate. Herein, we construct a well-defined O-bridged CuN₃-O-CuN₃ integrative catalytic pairs (Cu ICPs) based on Kirkendall effect. As a result, Cu ICPs with mixed Cu²⁺-Cu³⁺ species demonstrate >99% conversion and >550 h stability in acetylene hydrochlorination (simulated industrial reaction conditions), showcasing unparalleled performance in the liquid-phase hydrochlorination of five alkynes as well. A combined experimental and theoretical analyses reveal selective coupling between the d_xz/d_yz orbitals of

SUBMITTER: Yue Y 

PROVIDER: S-EPMC12575668 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature