Vinyl Chloride Monomers (VCM) in Chinese industry are mainly synthesized via the process ofhydrochlorination of acetylene, where carbon-based-mercury-chloride is used as the catalyst.Undoutedly, the mercury catalyst will be replaced gradually due to its serious pollution to air and water and being harmful to workers health.At the same time, we face globally the rapid decreasing of mercury resources and stricter control of its usage for environmental concern.Thus, the R&D on mercury-free catalysts for hydrochlorination of acetylene is imperative.