关键词: Sn-Bi-Co@AC催化剂, 氢氯化反应, 乙炔, 氯乙烯

Abstract: Using active carbon as carrier, SnCl4 based non mercury catalysts, including Sn@AC, Sn-Bi@AC, Sn-Bi-Co@AC, were synthesized by adding different content of BiCl3 and CoCl3. The catalysts were evaluated in acetylene hydrochlorination atmospheric fixed bed reactor. The results showed that the catalytic properties of synthetic three component catalysts were optimal on the proportion of 10%SnCl4, 5%BiCl3 and 10%CoCl3. Acetylene's conversion rate was more than 90% and the selectivity of vinyl chloride was around 95% within the reaction time of 100 h. Through the XRD and physical adsorption instrument, catalyst microstructures were characterized. Coconut shell activated carbon's specific surface area and pore size was significant increased after nitric acid treatment; adding component BiCl3 and CoCl3 could make the coke phenomenon on catalytic surface weakened.

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