SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2021, Vol. 29 ›› Issue (1): 154-159.DOI: 10.1016/j.cjche.2020.09.005

• Separation Science and Engineering • Previous Articles     Next Articles

Growth process and short chain alcohol separation performance of fluoride-containing NaY zeolite membrane

Xiaopan Chen1, Meihua Zhu1, Sitong Xiang1, Tian Gui1, Ting Wu1, Yuqin Li1, Na Hu1, Izumi Kumakiri2, Xiangshu Chen1,2, Hidetoshi Kita2   

  1. 1 State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;
    2 Graduate School of Science and Technology for Innovation, Graduate School Science and Engineering, Yamaguchi University, Ube 755-8611, Japan
  • Received:2020-03-13 Revised:2020-08-26 Online:2021-04-02 Published:2021-01-28
  • Contact: Meihua Zhu
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant No. 21868012 and 21968009), Jiangxi Provincial Department of Science and Technology (20171BCB24005, 20181ACH80003, 20192ACB80003 and 20192BBH80024).

Growth process and short chain alcohol separation performance of fluoride-containing NaY zeolite membrane

Xiaopan Chen1, Meihua Zhu1, Sitong Xiang1, Tian Gui1, Ting Wu1, Yuqin Li1, Na Hu1, Izumi Kumakiri2, Xiangshu Chen1,2, Hidetoshi Kita2   

  1. 1 State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;
    2 Graduate School of Science and Technology for Innovation, Graduate School Science and Engineering, Yamaguchi University, Ube 755-8611, Japan
  • 通讯作者: Meihua Zhu
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant No. 21868012 and 21968009), Jiangxi Provincial Department of Science and Technology (20171BCB24005, 20181ACH80003, 20192ACB80003 and 20192BBH80024).

Abstract: Growth process of the NaY zeolite membranes was investigated by fluoride-containing precursor synthesis gel. Compared with the fluoride-free precursor synthesis gel, the irregular NaY zeolite crystals were dissolved into amorphous by the fluoride-containing precursor synthesis gel initially, the amorphous contained the Y-type zeolite characteristic bands by the IR characterization. The fine square NaY zeolite crystals arose from the amorphous, which were accumulated and gradually grew into a dense NaY zeolite layer on the support surface after 6.5 h. Because the excessive NaY zeolites were dissolved by the strong alkaline and fluoride-containing precursor synthesis gel, there was plenty of amorphous on NaY zeolites layer for prolonging the crystallization time. The as-synthesized NaY zeolite membranes had a good separation performance and repeatability for separation of 10 wt% methanol (MeOH)/methyl methacrylate (MMA) mixture by pervaporation, the flux and separation factor were (1.27 ± 0.07) kg·m-2·h-1 and (4900 ± 1500) at 323 K, respectively. Besides, the NaY zeolite membranes were applied to separate the other short chain alcohol from the various alcohol/organic ester and alcohol/organic ether mixtures, the NaY zeolite membranes showed high short chain alcohol perm-selectivity.

Key words: NaY zeolite membrane, Growth process, Fluoride-containing, Short chain alcohols, Pervaporation

摘要: Growth process of the NaY zeolite membranes was investigated by fluoride-containing precursor synthesis gel. Compared with the fluoride-free precursor synthesis gel, the irregular NaY zeolite crystals were dissolved into amorphous by the fluoride-containing precursor synthesis gel initially, the amorphous contained the Y-type zeolite characteristic bands by the IR characterization. The fine square NaY zeolite crystals arose from the amorphous, which were accumulated and gradually grew into a dense NaY zeolite layer on the support surface after 6.5 h. Because the excessive NaY zeolites were dissolved by the strong alkaline and fluoride-containing precursor synthesis gel, there was plenty of amorphous on NaY zeolites layer for prolonging the crystallization time. The as-synthesized NaY zeolite membranes had a good separation performance and repeatability for separation of 10 wt% methanol (MeOH)/methyl methacrylate (MMA) mixture by pervaporation, the flux and separation factor were (1.27 ± 0.07) kg·m-2·h-1 and (4900 ± 1500) at 323 K, respectively. Besides, the NaY zeolite membranes were applied to separate the other short chain alcohol from the various alcohol/organic ester and alcohol/organic ether mixtures, the NaY zeolite membranes showed high short chain alcohol perm-selectivity.

关键词: NaY zeolite membrane, Growth process, Fluoride-containing, Short chain alcohols, Pervaporation