CAS Dalian Institute of Chemical Physics develops mercury-free production method for PVC

China produced ~15 million tons of PVC in 2013, 75 % from coal (Ca-carbide derived acetylene, addition of HCl with a HgCl2 catalyst). DICP developed a process based on silicon carbide doped with nitrogen which showed excellent hydrochlorination characteristics. Conversion was 80 %, and selectivity 98 % related to vinyl chloride.

CAS news release, April 24, 2014

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