Fig. 1

Reaction results of the acetylene hydrochlorination. a Various 1% Au/metal oxides and 1% Au/metal oxides and porous materials used as catalysts. [Reaction conditions: P = 0.1 MPa, T = 180 ^oC, HCl/C₂H₂ = 1.2, GHSV(C₂H₂) = 720 h⁻¹]. b The refined structure of the acetylene adsorbed 13X using the synchrotron X-ray powder diffraction, see Supplementary Information. c The stability test over Au/AC, Au/CeO₂&AC and Au/CeO₂&13X vs time on stream (TOS). [Reaction conditions: P = 0.1 MPa, T = 180 ^oC, HCl/C₂H₂ = 1.2, GHSV(C₂H₂) = 60 h⁻¹]. d The comparative activity of 0.1 wt% Au loading catalysts. [Reaction conditions: P = 0.1 MPa, T = 180 ^oC, HCl/C₂H₂ = 1.2, GHSV(C₂H₂) = 90 h⁻¹]. e Catalyst re-activation from pre-reduced Au/AC, Au/CeO₂&AC and Au/CeO₂&13×. [Reaction conditions: P = 0.1 MPa, T = 180 ^oC, HCl/C₂H₂ = 1.2 or 2.0, GHSV(C₂H₂) = 240 h⁻¹]