水介质中催化剂Raney Ni催化2-氯酚加氢脱氯  

RANEY Ni-CATALYZED HYDRODECHLORINATION OF 2-CHLOROPHENOL IN AQUEOUS SOLUTIONS

作　　者：周世伟[1] 马宣宣[1] 刘苏静[1] 杨翠云[1] 刘琪[1,2] 夏传海[1] 

机构地区：[1]中国科学院烟台海岸带研究所,烟台264003 [2]中国科学院研究生院,北京100049

出　　处：《环境化学》2010年第1期73-76,共4页Environmental Chemistry

基　　金：山东省博士基金(BS2009CL006);"十一五"科技支撑重点项目资助(2008BAC32B03)

摘　　要：选择水作为反应介质,以氢气为氢源,研究了Raney Ni催化下、水溶液中2-氯酚的加氢脱氯,调查了溶剂、碱助剂和碱金属或碱土金属氯化物对加氢脱氯反应的影响.发现在水体系中,2-氯酚更容易被加氢脱氯,水作为反应介质时显著改善了加氢脱氯的反应环境,消除了无机氯化物在催化剂表面的吸附和累积,使催化剂保持了高活性.2-Chlorophenol was completely hydrodechlorinated in aqueous solutions in 30 min over Raney Ni with H2 at 30℃ under atmospheric pressure.The nature of the solvents has an important influence on the reaction rates and the activity of the catalyst.Compared to the dechlorination in organic solvents,the catalyst showed higher activity in H2O.The presence of H2O improved the reaction environments,and eliminated the adsorption and accumulation of NaCl on the surface of the catalyst.Due to the absence of adsorption or accumulation on the surface of the catalyst,the presences of alkali metal or alkali earth metal chlorides in aqueous solutions had no influence on the dechlorination of 2-chlorophenol and the activity of the catalyst.

关 键 词：加氢脱氯 多相催化 2-氯酚 RANEY NI 

分 类 号：X131.2[环境科学与工程—环境科学]