CAJ | 학술논문

筛选出了催化性能较好的活性炭负载氯化钙（CaCl2/AC）催化剂用于五氯乙烷脱HCl制备四氯乙烯。考察了反应温度、空速、CaCl2负载量对CaCl2/AC催化剂催化性能的影响及催化剂的稳定性。实验结果表明最佳反应条件：反应温度为240℃,空速为3.4h-1,CaCl2负载量为0.3mmol/g,在此反应条件下五氯乙烷的转化率可达99%以上,四氯乙烯的收率达95%以上,催化剂催化性能重现性良好。采用X射线衍射（XRD）、氮气吸附-脱附对催化剂进行了表征。结果表明CaCl2在活性炭表面分散良好;随着CaCl2负载量的增加,CaCl2/AC催化剂的BET比表面及孔容逐渐减小。
사선출료최화성능교호적활성탄부재록화개（CaCl2/AC）최화제용우오록을완탈HCl제비사록을희。고찰료반응온도、공속、CaCl2부재량대CaCl2/AC최화제최화성능적영향급최화제적은정성。실험결과표명최가반응조건：반응온도위240℃,공속위3.4h-1,CaCl2부재량위0.3mmol/g,재차반응조건하오록을완적전화솔가체99%이상,사록을희적수솔체95%이상,최화제최화성능중현성량호。채용X사선연사（XRD）、담기흡부-탈부대최화제진행료표정。결과표명CaCl2재활성탄표면분산량호;수착CaCl2부재량적증가,CaCl2/AC최화제적BET비표면급공용축점감소。
Supported catalyst calcium chloride/activated carbon（CaCl2/AC） was prepared and used in dehydrochlorination of pentachloroethane to produce perchloroethylene.Influences of reaction temperature,space velocity and CaCl2 loading amount on catalytic activity of CaCl2/AC were investigated.Stability of catalytic activity of catalyst was also studied.Results of the experiment showed that the optimal conditions were reaction temperature 240℃,space velocity 3.4h-1,CaCl2 loading amount 0.3mmol/g.Under the optimal conditions,the conversion of pentachloroethane and the yield of perchloroethylene can reach more than 99% and 95%,respectively.And the repeatability of catalytic activity of catalyst was fine.The catalysts were characterized by X-ray diffraction（XRD） and nitrogen adsorption-desorption method.The results showed that the dispersion of CaCl2 on activated carbon surface was good.The BET surface area and pore volume of CaCl2/AC catalyst gradually decreased with the CaCl2 loading amount increased.