NDLI: Evaluation of hybrid silica sols for stable microporous membranes using high-throughput screening

Content Provider	Springer Nature Link
Author	Kreiter, R. Rietkerk, M. D. A. Castricum, H. L. Veen, H. M. ten Elshof, J. E. Vente, J. F.
Copyright Year	2010
Abstract	Microporous membranes are a promising option for energy-efficient molecular separations. Long-term hydrothermal stability of the membrane material is of prime importance for several industrial processes. Here, a short overview of silica-based membrane materials and their hydrothermal stability is presented. Following this, the development of a series of organic–inorganic hybrid silica sols is described, based on α,ω-bis(triethoxysilyl)-precursors with bridging methane, ethane, propane, and benzene groups. High-throughput screening was used to scan a range of sol parameters, followed by membrane preparation from the most promising sols. These organic–inorganic hybrid silica (HybSi$^{®}$) membranes were used in dewatering of lower alcohols by pervaporation. Separation factors up to 200 were found for ethanol/water mixtures, and up to 23 for methanol/water mixtures. Modest permselectivity values for hydrogen over nitrogen were found, ranging up to 20.7 for the shortest bridging group. It was concluded that the length of the organic bridge has a clear effect on the pore size distribution and the selectivity of the membrane.
Starting Page	245
Ending Page	252
Page Count	8
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	57
Issue Number	3
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2010-04-27
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Organic–inorganic hybrid Membrane Hydrothermal stability Pervaporation Gas separation Microporous HybSi$^{®}$ Optical and Electronic Materials Inorganic Chemistry Ceramics, Glass, Composites, Natural Methods Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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