Mercury-free nitrogen-doped activated carbon catalyst: an efficient catalyst for the catalytic coupling reaction of acetylene and ethylene dichloride to synthesize the vinyl chloride monomer
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作者
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刊物名称
REACT. CHEM. ENG.
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年、卷、文献号
2018, 3,
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关键词
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摘要
The global "Minamata Convention on Mercury" came into effect in 2017 exerting huge environmental pressure on acetylene-based polyvinyl chloride (PVC) processes. Research and development of mercury-free catalytic synthesis technologies for the entire PVC industry and even the sustainable development of the chlor-alkali industry are of great significance. Here, we report the catalyzed coupling reaction of acetylene and ethylene dichloride to synthesize vinyl chloride over a mercury-free, nitrogen-doped activated carbon catalyst (N@AC). The catalyst delivered stable performance with an ethylene dichloride conversion over 95%, acetylene conversion at similar to 90%, and selectivity for vinyl chloride over 98% at 260 degrees C. Both X-ray photoelectron spectroscopy data and catalytic activity of the catalysts revealed pyridinic N to be the active site. The results of this study show that the catalytic coupling reaction of acetylene and ethylene dichloride to synthesize vinyl chloride over a N@AC catalyst has a very attractive prospect in the PVC industry.
