From hydrophilic to hydrophobic HybSi® membranes: A change of affinity and applicability

Goulven Paradis, D.P. Shanahan, R. Kreiter, H.M. van Veen, H.L. Castricum, Arian Nijmeijer, J.F. Vente

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The present study describes the effect of the presence of terminating alkyl groups on the performance of organic–inorganic hybrid silica membranes. By incorporation of different R-triethoxysilanes (R=C1 to C10 alkyl) into 1,2-bis(triethoxysilyl)ethane (BTESE) based materials the affinity could be tailored from hydrophilic to hydrophobic. The separation properties of the membrane based on these materials was found to be strongly dependent on the length of the R-group. Gas permeance measurements indicated reduced molecular sieving properties and an enhanced affinity for CO2 for longer R-groups. Longer R-groups also resulted in lower permeate water purity, falling from >99 wt% for BTESE to ∼40 wt% for C10 in the dehydration of n-butanol/water (95/5 wt%) by pervaporation. Concomitantly, the permeate n-butanol purity in the pervaporation of n-butanol/water mixtures (6.8 wt% of n-butanol) increased to a value of >40 wt% for R=C10. This membrane exhibited constant separation factors over a large range of temperatures (30 to 90 °C) and n-butanol feed concentrations (0.5 to 6.8 wt%). By increasing the temperature from 30 to 90 °C, the n-butanol flux reached a value as high as 3 kg/m2 h for a feed mixture containing 4.5 wt% of n-butanol.
Original languageEnglish
Pages (from-to)157-162
JournalJournal of membrane science
Volume428
DOIs
Publication statusPublished - 2013

Fingerprint

1-Butanol
Butenes
affinity
membranes
Membranes
ethane
purity
Pervaporation
water
Ethane
molecular properties
Water
falling
stopping
dehydration
Gas fuel measurement
Temperature
silicon dioxide
temperature
Dehydration

Keywords

  • METIS-290814
  • IR-84193

Cite this

Paradis, G., Shanahan, D. P., Kreiter, R., van Veen, H. M., Castricum, H. L., Nijmeijer, A., & Vente, J. F. (2013). From hydrophilic to hydrophobic HybSi® membranes: A change of affinity and applicability. Journal of membrane science, 428, 157-162. https://doi.org/10.1016/j.memsci.2012.10.006
Paradis, Goulven ; Shanahan, D.P. ; Kreiter, R. ; van Veen, H.M. ; Castricum, H.L. ; Nijmeijer, Arian ; Vente, J.F. / From hydrophilic to hydrophobic HybSi® membranes: A change of affinity and applicability. In: Journal of membrane science. 2013 ; Vol. 428. pp. 157-162.
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abstract = "The present study describes the effect of the presence of terminating alkyl groups on the performance of organic–inorganic hybrid silica membranes. By incorporation of different R-triethoxysilanes (R=C1 to C10 alkyl) into 1,2-bis(triethoxysilyl)ethane (BTESE) based materials the affinity could be tailored from hydrophilic to hydrophobic. The separation properties of the membrane based on these materials was found to be strongly dependent on the length of the R-group. Gas permeance measurements indicated reduced molecular sieving properties and an enhanced affinity for CO2 for longer R-groups. Longer R-groups also resulted in lower permeate water purity, falling from >99 wt{\%} for BTESE to ∼40 wt{\%} for C10 in the dehydration of n-butanol/water (95/5 wt{\%}) by pervaporation. Concomitantly, the permeate n-butanol purity in the pervaporation of n-butanol/water mixtures (6.8 wt{\%} of n-butanol) increased to a value of >40 wt{\%} for R=C10. This membrane exhibited constant separation factors over a large range of temperatures (30 to 90 °C) and n-butanol feed concentrations (0.5 to 6.8 wt{\%}). By increasing the temperature from 30 to 90 °C, the n-butanol flux reached a value as high as 3 kg/m2 h for a feed mixture containing 4.5 wt{\%} of n-butanol.",
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From hydrophilic to hydrophobic HybSi® membranes: A change of affinity and applicability. / Paradis, Goulven; Shanahan, D.P.; Kreiter, R.; van Veen, H.M.; Castricum, H.L.; Nijmeijer, Arian; Vente, J.F.

In: Journal of membrane science, Vol. 428, 2013, p. 157-162.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - From hydrophilic to hydrophobic HybSi® membranes: A change of affinity and applicability

AU - Paradis, Goulven

AU - Shanahan, D.P.

AU - Kreiter, R.

AU - van Veen, H.M.

AU - Castricum, H.L.

AU - Nijmeijer, Arian

AU - Vente, J.F.

PY - 2013

Y1 - 2013

N2 - The present study describes the effect of the presence of terminating alkyl groups on the performance of organic–inorganic hybrid silica membranes. By incorporation of different R-triethoxysilanes (R=C1 to C10 alkyl) into 1,2-bis(triethoxysilyl)ethane (BTESE) based materials the affinity could be tailored from hydrophilic to hydrophobic. The separation properties of the membrane based on these materials was found to be strongly dependent on the length of the R-group. Gas permeance measurements indicated reduced molecular sieving properties and an enhanced affinity for CO2 for longer R-groups. Longer R-groups also resulted in lower permeate water purity, falling from >99 wt% for BTESE to ∼40 wt% for C10 in the dehydration of n-butanol/water (95/5 wt%) by pervaporation. Concomitantly, the permeate n-butanol purity in the pervaporation of n-butanol/water mixtures (6.8 wt% of n-butanol) increased to a value of >40 wt% for R=C10. This membrane exhibited constant separation factors over a large range of temperatures (30 to 90 °C) and n-butanol feed concentrations (0.5 to 6.8 wt%). By increasing the temperature from 30 to 90 °C, the n-butanol flux reached a value as high as 3 kg/m2 h for a feed mixture containing 4.5 wt% of n-butanol.

AB - The present study describes the effect of the presence of terminating alkyl groups on the performance of organic–inorganic hybrid silica membranes. By incorporation of different R-triethoxysilanes (R=C1 to C10 alkyl) into 1,2-bis(triethoxysilyl)ethane (BTESE) based materials the affinity could be tailored from hydrophilic to hydrophobic. The separation properties of the membrane based on these materials was found to be strongly dependent on the length of the R-group. Gas permeance measurements indicated reduced molecular sieving properties and an enhanced affinity for CO2 for longer R-groups. Longer R-groups also resulted in lower permeate water purity, falling from >99 wt% for BTESE to ∼40 wt% for C10 in the dehydration of n-butanol/water (95/5 wt%) by pervaporation. Concomitantly, the permeate n-butanol purity in the pervaporation of n-butanol/water mixtures (6.8 wt% of n-butanol) increased to a value of >40 wt% for R=C10. This membrane exhibited constant separation factors over a large range of temperatures (30 to 90 °C) and n-butanol feed concentrations (0.5 to 6.8 wt%). By increasing the temperature from 30 to 90 °C, the n-butanol flux reached a value as high as 3 kg/m2 h for a feed mixture containing 4.5 wt% of n-butanol.

KW - METIS-290814

KW - IR-84193

U2 - 10.1016/j.memsci.2012.10.006

DO - 10.1016/j.memsci.2012.10.006

M3 - Article

VL - 428

SP - 157

EP - 162

JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

ER -