摘要
采用二次生长法在α-Al_2O_3四通道中空纤维支撑体外表面合成SAPO-34分子筛膜,用于渗透汽化脱水分离。考察操作温度对分子筛膜渗透汽化性能的影响,并研究渗透汽化过程中膜结构性能的稳定性。结果表明:采用球磨晶种诱导合成出了高质量的SAPO-34分子筛膜,75℃下膜在异丙醇(90%)-水(10%)体系中,分离因子达到3 600,渗透通量为3.34 kg/(m^2·h);在乙醇(90%)-水(10%)体系中,膜的分离因子最高为419,渗透通量为1.19kg/(m^2·h)。SAPO-34分子筛膜具有良好的渗透汽化分离稳定性和耐酸性能。
SAPO-34zeolite membranes were prepared on external surface of four channelα-Al2O3hollow fibers for pervaporation dehydration by secondary-growth method.Influence of operating temperature on pervaporation performance of the membranes was investigated.The structure stability of the membranes was also evaluated for pervaporation dehydration.Results showed that high-quality SAPO-34zeolite membranes were prepared with the induction of ball-milled seeds.The membrane exhibited a high separation factor of3600and permeation flux of3.34kg/(m2·h)in dehydration of isopropanol(90%)-water(10%)mixture and performed a separation factor of419and permeation flux of1.19kg/(m2·h)in dehydration of ethanol(90%)-water(10%)mixture at75℃.The membranes showed good operating stability and acid resistance during pervaporation dehydration.
作者
陈阳
张玉亭
张春
顾学红
CHEN Yang;ZHANG Yuting;ZHANG Chun;GU Xuehong(State Key Laboratory of Materials Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China)
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2018年第1期46-51,共6页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家自然科学基金(21222602
21490585
21176117)
国家高技术研究发展计划(863计划)(2015AA03A602)
江苏省自然科学基金杰出青年基金(BK2012040)
江苏省自然科学基金青年科学基金(BK20130915)
江苏省六大人才高峰项目
