太原理工大学学报2017，Vol.48Issue(2)：143-148,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2017.02.001
以EMT为晶种外延生长制备NaY分子筛膜及其渗透蒸发性能研究
Synthesis of NaY Membrane by Epitaxial Growth Using EMT as Seeds and the Study of Its Pervaporation Performance
摘要
Abstract
Using EMT zeolite grains as seeds,NaY membranes were synthesized by secondary hydrothermal reaction method.The effect of alkalinity and the amount of Al in the secondary growth sol on the microstructure of the membranes was investigated.The effect of the concentration of the feed mixture and the pervaporation temperature on the separation performance was investigate when the membranes were applied to separate MeOH/DMC mixture.The stability of the membrane was also investigated.The results show that,when the molar ratio of n(SiO2)/n (Na2O) =1/1.4 and n(SiO2)/n(Al2O3)=10 in the secondary growth sol,the membrane was of the highest quality in all the membranes we prepared.The separation performance was effected by the composition of feed mixture and pervaporation temperature.At 50 ℃,with the increase of feed mixture concentration (20％～80％),the separation factor decreased from 34.1 to 5.2,the flux increased from 114.7 to 135.5 g/(m2 · h));with the increase of pervaporation temperature (20～80 ℃),for the feed mixture with 50％ methanol,the separation factor decreased from 29.8 to 2.8 and the flux increased from 96.3 to 180.8 g/(m2 · h).The membrane was stable.Within 14 h pervaporation period,no change on the separation factor and flux was observed关键词
EMT晶种/二次生长法/NaY沸石膜/MeOH/DMC分离Key words
EMT seeds/secondary growth method/NaY membranes/MeOH/DMC seperation分类
化学化工引用本文复制引用
魏巧琳,蒋海冰,王晓东,黄伟..以EMT为晶种外延生长制备NaY分子筛膜及其渗透蒸发性能研究[J].太原理工大学学报,2017,48(2):143-148,6.基金项目
高等学校博士学科点专项科研基金-新教师类联合(20111402120011) （20111402120011）
高等学校博士学科点专项科研基金-优先发展领域(2011402130002) （2011402130002）
