膜
沸石
渗透
碳氢化合物
化学工程
气体分离
纤维
材料科学
涂层
制作
粘度
膜技术
热液循环
中空纤维膜
化学
纳米技术
催化作用
有机化学
复合材料
医学
生物化学
替代医学
病理
工程类
作者
Sheng Yang,Byunghyun Min,Qiang Fu,Christopher W. Jones,Sankar Nair
标识
DOI:10.1002/anie.202204265
摘要
Zeolite membranes show great potential for gas and hydrocarbon separations, but high manufacturing cost has been one of the main hurdles in their industrial application. Here we demonstrate a method termed viscosity-confined dry gel conversion (VCDGC) for zeolite hollow fiber membrane fabrication. We demonstrate in detail the VCDGC synthesis of small-pore CHA zeolite membranes. Extensive permeation measurements reveal that dry gel-processed CHA zeolite hollow fiber membranes have excellent gas and hydrocarbon separation characteristics well exceeding or comparable to current membranes. Medium-pore MFI membranes are also fabricated, and their favorable hydrocarbon separation characteristics indicate the versatility and reliability of the VCDGC method.
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