Melt Compounding of Swollen Titanosilicate JDF-L1 with Polysulfone To Obtain Mixed Matrix Membranes for H2/CH4 Separation

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• 作者：Sonia Castarlenas ; Patricia Gorgojo ; Clara Casado-Coterillo ; Sudeep Masheshwari ; Michael Tsapatsis ; Carlos T茅llez ; Joaqu铆n Coronas
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：February 6, 2013
• 年：2013
• 卷：52
• 期：5
• 页码：1901-1907
• 全文大小：348K
• 年卷期：v.52,no.5(February 6, 2013)
• ISSN：1520-5045

文摘

JDF-L1 is a microporous layered titanosilicate. JDF-L1-based composite materials have been prepared by melt compounding commercial polysulfone together with swollen JDF-L1 at a temperature gradient of 303鈥?40 掳C. During the melt compounding process most of the swollen JDF-L1 was exfoliated, confirmed by thermal, TEM, and XRD analyses. The exfoliated JDF-L1/polysulfone master batch was diluted in polysulfone to obtain mixed matrix membranes (MMMs) with inorganic loadings in the 0鈥?.5 wt % range, in which exfoliated JDF-L1 particles were well dispersed. The MMMs were applied to the separation of a H₂/CH₄ mixture with an improved performance as compared to the pure polymer or to chemically exfoliated JDF-L1/polysulfone membranes. The best performance obtained in this work corresponds to an 8.3 wt % MMM with H₂ permeability and H₂/CH₄ selectivity of 12.5 Barrer and 128, respectively.