Hydrochlorination of acetylene using expanded multilayered vermiculite (EML-VMT)-supported catalysts |
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| Authors: | Xin-Huang Feng Yu Ming-Yuan Zhu Fei-Hong Ouyang Bin Dai Jian-Ming Dan |
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| Institution: | 1.Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;2.Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, Shihezi 832003, China;3.Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi 832003, China |
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| Abstract: | Catalyst supports have very important effects on catalyst performance. A novel expanded multilayered vermiculite (EML-VMT) is successfully used as the catalyst support for the acetylene hydrochlorination. By mixing carbon on the surface of EML-VMT (i.e., EML-VMT-C), the HgCl2/EML-VMT-C achieved a high acetylene conversion of 97.3%, a vinyl chloride selectivity of 100% and a turn over frequency (TOF) value of 8.83×10-3 s-1 at a temperature of 140℃, an acetylene gas hourly space velocity (GHSV) of 108 h-1, and a feed volume ratio V(HCl)/V(C2H2) of 1.15. Moreover, the HgCl2/EML-VMT-C shows good stability. The EML-VMT also shows potential in the preparation of other EML-VMT-supported catalysts. |
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| Keywords: | Acetylene hydrochlorination Vermiculite Catalyst support Acetylene conversion Vinyl chloride selectivity |
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