SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 60 ›› Issue (8): 205-211.DOI: 10.1016/j.cjche.2023.01.020

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

Wenwen Zhang1, Zhigang Xue1, Liyun Cui2, Haoliang Gao2, Di Zhao2, Rongfei Zhou1, Weihong Xing1   

  1. 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
  • Received:2022-12-06 Revised:2023-01-18 Online:2023-10-28 Published:2023-08-28
  • Contact: Rongfei Zhou,E-mail:rf-zhou@njtech.edu.cn;Weihong Xing,E-mail:xingwh@njtech.edu.cn
  • Supported by:
    We acknowledge the supply of the support by Prof. Yiqun Fan and Prof. Minhui Qiu. We acknowledge 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) and the open project of the State Key Laboratory of China (KL21-04 and D2021FK055).

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

Wenwen Zhang1, Zhigang Xue1, Liyun Cui2, Haoliang Gao2, Di Zhao2, Rongfei Zhou1, Weihong Xing1   

  1. 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
  • 通讯作者: Rongfei Zhou,E-mail:rf-zhou@njtech.edu.cn;Weihong Xing,E-mail:xingwh@njtech.edu.cn
  • 基金资助:
    We acknowledge the supply of the support by Prof. Yiqun Fan and Prof. Minhui Qiu. We acknowledge 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) and the open project of the State Key Laboratory of China (KL21-04 and D2021FK055).

Abstract: 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-5 zeolite 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.

Key words: Membranes, Zeolites, Separation, Xylene, Secondary growth

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-5 zeolite 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