Synthesis of an IMF zeolite membrane for the separation of xylene isomer  

作　　者：Wenwen Zhang Zhigang Xue Liyun Cui Haoliang Gao Di Zhao Rongfei Zhou Weihong Xing 

机构地区：[1]State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China [2]Chambroad Chemical Industry Research Institute Co.Ltd.,Binzhou 256500,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第8期205-211,共7页中国化学工程学报（英文版）

基　　金：the financial supports that are from the National Natural Science Foundation of China (21921006, U22A20414 and 21938007);the Natural Science Foundation of Jiangsu Province (BK20220002);the open project of the State Key Laboratory of China (KL21-04 and D2021FK055)。

摘　　要：The synthesis of a continuous IMF zeolite membrane was fabricated on tubular substrates by seeded growth for the first time. The straight channels of IMF zeolite with diameters of 0.53–0.59 nm are distinguishable for p-xylene from o-xylene molecules. Pure IMF-phase high-silica IM-5 zeolite seeds with uniform and fine crystal size were fabricated by a new sonication-assisted aging process. The seeds were coated on the support by dipcoating and induced the formation of continuous membrane. Separation performance in p-/o-xylene mixture was investigated at various temperature and pressure. The typical IM-5zeolite membrane had p-/o-xylene separation factor of 3.7. Our results suggest that IM-5 zeolite is a potentially good membrane material for the separation of xylene mixtures.

关 键 词：Membranes Zeolites SEPARATION XYLENE Secondary growth 

分 类 号：TQ051.893[化学工程] TQ241.13