Gas and organic vapor permeation through b-oriented MFI membranes

Zhiping Lai, Michael Tsapatsis

Research output: Contribution to journalArticle

92 Scopus citations

Abstract

Siliceous ZSM-5 zeolite membranes oriented with their straight 0.55-nm pores perpendicular to the support and exhibiting high separation factors for p-xylene over o-xylene were reported recently using secondary growth of an oriented seed monolayer and employing organic structure-directing agents as crystal shape modifiers (Lai et al., Science 2003, 300, 456). Here, we report additional permeation results for this type of membrane. High separation factors, as well as high permeances, were observed for benzene/cyclohexane and benzene/2,2-dimethylbutane, although the separation factors for n-/i-butane and N2/SF6 were small. The membrane stability is satisfactory. Reproducibility of the permeation properties at 220 °C is demonstrated.

Original languageEnglish (US)
Pages (from-to)3000-3007
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume43
Issue number12
StatePublished - Jun 9 2004

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