南京工业大学学报（自然科学版）2018，Vol.40Issue(3)：6-11,6.DOI:10.3969/j.issn.1671-7627.2018.03.002
CHA分子筛膜用于DMF渗透汽化脱水研究
Study on pervaporation dehydration of DMF by CHA zeolite membrane
摘要
Abstract
A CHA zeolite membrane supported on external surface of yttria-stabilized zirconia(YSZ) hollow fiber was used for pervaporation(PV)dehydration of dimethylformamide(DMF).Effects of feed water content and operating temperature on separation performance of the membrane were investigated.The long-term PV stability of CHA zeolite membrane was also studied.Results showed that water fluxes increased with the increasing water content and operation temperature in the water/DMF mixture.The membrane exhibited a high water permeation flux of 5.7 kg/(m2·h)together with a separation factor of 1 180 at 75℃ in dehydration of 10.0% water/DMF mixture.Due to the adsorption of DMF on membrane surface and in pores,the water permeation flux initially decreased and then stabilized at about 1.0 kg/(m2·h)after 24 h stabilization period and the water content in permeate stabilized at above 99.0%.关键词
中空纤维/CHA分子筛膜/二甲基甲酰胺/渗透汽化Key words
hollow fiber/CHA zeolite membrane/dimethylformamide/pervaporation分类
化学化工引用本文复制引用
季可凡,张玉亭,蒋冀,石锐,顾学红..CHA分子筛膜用于DMF渗透汽化脱水研究[J].南京工业大学学报（自然科学版）,2018,40(3):6-11,6.基金项目
国家自然科学基金重大项目(21490585) （21490585）
国家高技术研究发展计划(2015AA03A602) （2015AA03A602）
