2-氯酚在超临界水-NaOH体系中的脱氯特性  

Dechlorination characteristics of o-chlorophenol in supercritical water-sodium hydroxide system

作　　者：孙治荣[1] 马林[1] 韩延波[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124

出　　处：《环境工程学报》2012年第4期1231-1234,共4页Chinese Journal of Environmental Engineering

基　　金：北京市自然科学基金资助项目(8082005)

摘　　要：研究了2-氯酚在超临界水-NaOH体系中的脱氯特性,考察了NaOH添加对2-氯酚转化率、Cl-生成率、脱氯选择性等的影响。实验结果表明,NaOH的添加能够显著提高2-氯酚的转化率、Cl-的生成率和脱氯选择性。2-氯酚的转化率随着NaOH添加量的增大而增大,460℃、25 MPa条件下,NaOH添加量与2-氯酚的摩尔比为1∶1时,停留时间27 s时可实现2-氯酚的完全转化。The dechlorination characteristics of o-chlorophenol in supercritical water-sodium hydroxide system were studied.The conversion of o-chlorophenol,the yield of chloride ion and the dechlorination selectivity were investigated in the presence of sodium hydroxide.Results indicated that sodium hydroxide could significantly improve the conversion of o-chlorophenol,the yield of chloride ion and the dechlorination selectivity.The conversion of o-chlorophenol was improved with the increase of the additive amount of sodium hydroxide.o-chlorophenol conversed completely at residence time of 27 s under the conditions of 460 ℃,25 MPa,and the molar ratio of sodium hydroxide to o-chlorophenol of 1 to 1.

关 键 词：超临界水 氢氧化钠 2-氯酚 脱氯选择性 

分 类 号：X703[环境科学与工程—环境工程]