The research on mercury free production of Dalian Chemical PVC has made a breakthrough
on April 30, it was learned from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences that with the support of the 973 project of the Ministry of science and technology and the National Natural Science Foundation of China, the research on nano carbon catalysis of Dalian Chemical Institute has made a major breakthrough. This research has laid a good foundation for the development of mercury free catalysts. Alloyed high carbon steel (or low carbon alloy steel) and cold working die steel have opened up a new way for the ultimate mercury free production of PVC Carbon nanostructures were fabricated at the interface, and nitrogen atoms were doped in the carbon structure by ammoniation and other methods. The nitrogen doped graphene like material formed on the surface of silicon carbide shows excellent direct catalytic performance for acetylene hydrochlorination. Under the same feed space velocity of the traditional mercuric chloride catalytic process, the one-way conversion of acetylene on the catalyst is 80%, and the selectivity of vinyl chloride is 98%. The catalyst shows excellent stability after 150 hours of experiment
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