Ni/Fe/Al_2O_3·PVDF催化还原剂的表征及制备过程优化  

Characterization and optimization of preparation process of Ni /Fe /Al_2O_3·PVDF catalytic reductant

作　　者：邓慧娟[1] 刘惠玲[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《环境工程学报》2013年第11期4259-4263,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50978066)

摘　　要：在PVDF基体改性的基础上,采用浸渍法制备出Ni/Fe/Al2O3·PVDF催化还原剂。通过对一氯乙酸的脱氯效果研究,对交联液配比及交联时间、不同浓度硫酸镍浸渍时间、镍铁比等因素进行优化,实验优化结果表明,Ni/Fe/Al2O3·PVDF催化还原剂对一氯乙酸脱氯60 min脱氯率达到64%。经SEM表征,制备出的双金属在膜载体表面及断面分布均匀,呈球状和片状结构且双金属未发生团聚。In this study,Ni/Fe/Al2O3·PVDF catalytic reductant was prepared through impregnation method based on matrix modification of PVDF. Crosslinking liquid ratio and crosslinking time,dipping time in different nickel sulfate solution and nickel-iron ratios were optimized by the dechlorination effect study of mono- chloro acetic acid （MCA）. The optimized results showed that the dechlorination effect of MCA degraded by Ni/Fe/Al2O3·PVDFcatalytic reductant reached 64% in 60 min. SEM revealed that Ni/Fe bimetal in the surface and cross-section of film carrier were uniformly distributed, which presented as spherical and lamellar structure without aggregation.

关 键 词：NI FE PVDF 一氯乙酸脱氯 

分 类 号：X703[环境科学与工程—环境工程]