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首页> 外文会议>Sol-Gel Methods for Materials Processing: Focusing on Materials for Pollution Control, Water Purification, and Soil Remediation >SOL-GEL APPROACHES IN THE SYNTHESIS OF MEMBRANE MATERIALS FOR NANOFILTRATION AND PERVAPORATION
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SOL-GEL APPROACHES IN THE SYNTHESIS OF MEMBRANE MATERIALS FOR NANOFILTRATION AND PERVAPORATION

机译：纳滤和渗透膜材料的溶胶-凝胶合成方法

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Molecular separation using membranes is widely considered as an energy-efficient alternative for conventional industrial separation techniques. For the preparation of such membranes sol-gel technology is highly suitable. Using sol-gel techniques thin (50-100 nm) amorphous nanoporous layers having pore sizes in the micropore (<2 nm) or fine mesoporous (<5 nm) region can be prepared on a porous substrate. These layered porous systems, usually in tubular form, can be used for nanofiltration, pervaporation and gas separation applications. The application window is dependent on the material properties, such as the pore size and pore size distribution, the interfacial properties of the pores, and the defect density. The success of this technology in actual industrial applications strongly depends on reproducible large scale production of the sol-gel membranes and on a sufficient stability of the membranes with respect to flux and selectivity. In addition the production cost of the full membrane system is an important aspect. Here, we will focus on the more chemical aspects in the membrane preparation. Main topics are synthesis and properties of the sols, the preparation of microporous thin films, and the search for membrane materials that have a high hydrothermal stability.
机译：使用膜进行分子分离被广泛认为是常规工业分离技术的节能替代方案。为了制备这种膜，溶胶-凝胶技术非常适合。使用溶胶-凝胶技术，可以在多孔基材上制备具有在微孔（<2 nm）或细中孔（<5 nm）区域内孔径的薄（50-100 nm）非晶态纳米多孔层。这些通常呈管状形式的分层多孔系统可用于纳滤，全蒸发和气体分离应用。施加窗口取决于材料特性，例如孔径和孔径分布，孔的界面特性以及缺陷密度。该技术在实际工业应用中的成功很大程度上取决于可重复大规模生产的溶胶-凝胶膜，以及膜在通量和选择性方面的足够稳定性。另外，全膜系统的生产成本是重要的方面。在这里，我们将专注于膜制备中更多的化学方面。主要主题是溶胶的合成和性质，微孔薄膜的制备以及寻找具有高水热稳定性的膜材料。

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