Improving separation performance of high-silica zeolite membranes by surface modification with triethoxyfluorosilane

N. Kosinov; V.G.P. Sripathi; E.J.M. Hensen

doi:10.1016/j.micromeso.2014.03.034

Improving separation performance of high-silica zeolite membranes by surface modification with triethoxyfluorosilane

N. Kosinov, V.G.P. Sripathi, E.J.M. Hensen

Inorganic Materials & Catalysis

Research output: Contribution to journal › Article › Academic › peer-review

34 Citations (Scopus)

Abstract

Treatment with triethoxyfluorosilane (TEFS) enhances the hydrophobic properties of high-silica MFI and MEL membranes synthesized by a microwave-assisted secondary growth method. The modified membranes showed significant improvement in recovery of ethanol from ethanol/water mixtures by pervaporation. The TEFS treatment was also able to heal some intercrystalline defects in the zeolite membrane film. Additional physical–chemical characterization revealed that the external zeolite surface is selectively covered by the organosilane without blocking zeolite micropores. The grafted Si–F moieties are thermally and hydrothermally stable.

Original language	English
Pages (from-to)	24-30
Number of pages	7
Journal	Microporous and Mesoporous Materials
Volume	194
DOIs	https://doi.org/10.1016/j.micromeso.2014.03.034
Publication status	Published - 2014

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title = "Improving separation performance of high-silica zeolite membranes by surface modification with triethoxyfluorosilane",

abstract = "Treatment with triethoxyfluorosilane (TEFS) enhances the hydrophobic properties of high-silica MFI and MEL membranes synthesized by a microwave-assisted secondary growth method. The modified membranes showed significant improvement in recovery of ethanol from ethanol/water mixtures by pervaporation. The TEFS treatment was also able to heal some intercrystalline defects in the zeolite membrane film. Additional physical–chemical characterization revealed that the external zeolite surface is selectively covered by the organosilane without blocking zeolite micropores. The grafted Si–F moieties are thermally and hydrothermally stable.",

author = "N. Kosinov and V.G.P. Sripathi and E.J.M. Hensen",

year = "2014",

doi = "10.1016/j.micromeso.2014.03.034",

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journal = "Microporous and Mesoporous Materials",

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AU - Kosinov, N.

AU - Sripathi, V.G.P.

AU - Hensen, E.J.M.

PY - 2014

Y1 - 2014

N2 - Treatment with triethoxyfluorosilane (TEFS) enhances the hydrophobic properties of high-silica MFI and MEL membranes synthesized by a microwave-assisted secondary growth method. The modified membranes showed significant improvement in recovery of ethanol from ethanol/water mixtures by pervaporation. The TEFS treatment was also able to heal some intercrystalline defects in the zeolite membrane film. Additional physical–chemical characterization revealed that the external zeolite surface is selectively covered by the organosilane without blocking zeolite micropores. The grafted Si–F moieties are thermally and hydrothermally stable.

AB - Treatment with triethoxyfluorosilane (TEFS) enhances the hydrophobic properties of high-silica MFI and MEL membranes synthesized by a microwave-assisted secondary growth method. The modified membranes showed significant improvement in recovery of ethanol from ethanol/water mixtures by pervaporation. The TEFS treatment was also able to heal some intercrystalline defects in the zeolite membrane film. Additional physical–chemical characterization revealed that the external zeolite surface is selectively covered by the organosilane without blocking zeolite micropores. The grafted Si–F moieties are thermally and hydrothermally stable.

U2 - 10.1016/j.micromeso.2014.03.034

DO - 10.1016/j.micromeso.2014.03.034

M3 - Article

SN - 1387-1811

VL - 194

SP - 24

EP - 30

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

ER -

Improving separation performance of high-silica zeolite membranes by surface modification with triethoxyfluorosilane

Abstract

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