Zeolite-Filled Porous Mixed Matrix Membranes for Air Separation

详细信息    查看全文

• 作者：Jung-Tsai Chen ; Chien-Chung Shih ; Ywu-Jang Fu ; Shu-Hsien Huang ; Chien-Chieh Hu ; Kueir-Rarn Lee ; Juin-Yih Lai
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：February 19, 2014
• 年：2014
• 卷：53
• 期：7
• 页码：2781-2789
• 全文大小：633K
• ISSN：1520-5045

文摘

This work introduces the preparation of zeolite-filled porous mixed matrix membranes (MMMs) and discusses their potential use for air separation. Porous polysulfone (PSF) matrix membranes were prepared using the nonsolvent-induced phase separation process. Scanning electron microscope and gas permeation experiments suggested the presence of closed pores in the porous matrix membranes. Furthermore, porous MMMs containing zeolite 4A particles as filler were prepared and characterized. The permeation properties of porous MMMs were highly dependent on the zeolite content. The introduction of zeolite particles distorted the closed pores in the PSF matrix and formed nonselective voids which resulted in very high oxygen flux but low O₂/N₂ selectivity. The annealing technique for modifying the nonselective pores present in the polymer鈥搝eolite interface is also described in this study. The resulting annealed porous MMMs had the ability to separate O₂ from N₂ more effectively than traditional dense MMMs.