Melt compounding of swollen titanosilicate JDF-L1 with polysulfone to obtain mixed matrix membranes for H2/CH4 separation

Sonia Castarlenas, Patricia Gorgojo, Clara Casado-Coterillo, Sudeep Masheshwari, Michael Tsapatsis, Carlos Téllez, Joaquín Coronas

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24 Scopus citations

Abstract

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 303-340 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 0-9.5 wt % range, in which exfoliated JDF-L1 particles were well dispersed. The MMMs were applied to the separation of a H 2/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.

Original languageEnglish (US)
Pages (from-to)1901-1907
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume52
Issue number5
DOIs
StatePublished - Feb 6 2013

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