• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Synthesis and water vapor separation properties of pure silica and aluminosilicate MCM-48 membranes
【24h】

Synthesis and water vapor separation properties of pure silica and aluminosilicate MCM-48 membranes

机译：纯二氧化硅和铝硅酸盐MCM-48膜的合成及水蒸气分离特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This work reports on the hydrothermal synthesis and gas-vapor separation properties of ordered meso-porous MCM-48 and Al-MCM-48 membranes. Gas permeation data for these membranes is characterized by the Knudsen type permeation mechanism, with a helium permeance of 7 x 10~(-8) mol/m~2 Pas and 3 x 10~(-8) mol/m~2 Pas, respectively, confirming the mesoporous nature of the membranes synthesized. Separation of a water vapor/oxygen mixture for these membranes was studied to explore potential use of these membranes in air dehumidification and air conditioning applications. These membranes offer high water vapor/oxygen selectivity as a result of capillary condensation of water vapor in the pores of the membranes. In the case of MCM-48, an oxygen permeance of 5 x 10~(-9) mol/m~2 Pa s is obtained, with a water permeance of around 1 x 10~(-7) mol/m~2 Pas. The water vapor/oxygen separation factors as high as 17 are achieved. Al-MCM-48 membranes are seen to provide much higher separation factors reaching as high as 142, with water vapor permeance of 6 x 10~(-8) mol/m~2 Pas.
机译：这项工作报告了有序中孔MCM-48和Al-MCM-48膜的水热合成和气水分离特性。这些膜的气体渗透数据以Knudsen型渗透机理为特征，氦气渗透率为7 x 10〜（-8）mol / m〜2 Pas和3 x 10〜（-8）mol / m〜2 Pas，分别证实了合成膜的介孔性质。研究了用于这些膜的水蒸气/氧气混合物的分离，以探索这些膜在空气除湿和空调应用中的潜在用途。由于水蒸汽在膜孔中的毛细管冷凝作用，这些膜具有高的水蒸气/氧气选择性。在MCM-48的情况下，氧气渗透率为5 x 10〜（-9）mol / m〜2 Pas，水渗透率为1 x 10〜（-7）mol / m〜2 Pas左右。达到高达17的水蒸气/氧气分离系数。 Al-MCM-48膜可提供更高的分离因子，高达142，水蒸气渗透率为6 x 10〜（-8）mol / m〜2 Pas。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号