硅酸盐学报2017，Vol.45Issue(7)：968-975,8.DOI:10.14062/j.issn.0454-5648.2017.07.12
T型分子筛膜在清液体系中的制备优化
Optimization of Preparing Zeolite T Membranes from Clear Solutions
张青鹏 1周志辉 1吴红丹 1尧鹏魁 1徐嘉晨1
作者信息
- 1. 武汉科技大学,冶金矿产资源高效利用与造块湖北省重点实验室,武汉 430081
- 折叠
摘要
Abstract
T-type zeolite membranes were synthesized onα-Al2O3 tubular supportviasecondary growth from clear solution with a molar ratio ofn(SiO2):n(Al2O3):n(Na2O):n(K2O):n(H2O)=54.0:1.0:15.5:5.3:863.2. The crystal structure and morphologies of T-type zeolite membranes were analyzed by X-ray diffraction and scanning electron microscopy. The effects of seed matching method, seed concentration, crystallization time and temperature on the pervaporation properties of T-type zeolite membranes were investigated. The results show that T-type zeolite membrane synthesized under the optimized conditions (i.e., the precoated seeds method of the first time of 10g/L large seed and second time of 5g/L small seeds, crystallization temperature of 155°C and crystallization time of 6h) has a water flux of 1.40 kg/(m2·h) and a separation factor of 2318 for dehydration of 90%IPA (isopropyl alcohol) aqueous solution by pervaporation at 70°C.关键词
T型分子筛膜/清液体系/二次生长法/热浸渍涂晶/渗透汽化Key words
T-type zeolite membrane/clear solution/secondary growth/hot dip-coating method/pervaporation分类
化学化工引用本文复制引用
张青鹏,周志辉,吴红丹,尧鹏魁,徐嘉晨..T型分子筛膜在清液体系中的制备优化[J].硅酸盐学报,2017,45(7):968-975,8.
