• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Hydrogen-Bonded Polyimide/Metal-Organic Framework Hybrid Membranes for Ultrafast Separations of Multiple Gas Pairs
【24h】

Hydrogen-Bonded Polyimide/Metal-Organic Framework Hybrid Membranes for Ultrafast Separations of Multiple Gas Pairs

机译：氢键聚酰亚胺/金属有机骨架杂化膜，可快速分离多种气体对

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

Membranes have seen a growing role in mitigating the extensive energy used for gas separations. Further expanding their effectiveness in reducing the energy penalty requires a fast separation process via a facile technique readily integrated with industrial membrane formation platforms, which has remained a challenge. Here, an ultrapermeable polyimide/metal-organic framework (MOF) hybrid membrane is reported, enabling ultrafast gas separations for multiple applications (e.g., CO2 capture and hydrogen regeneration) while offering synthetic enhanced compatibility with the current membrane manufacturing processes. The membranes demonstrate a CO2 and H-2 permeability of 2494 and 2932 Barrers, respectively, with a CO2/CH4, H-2/CH4, and H-2/N-2 selectivity of 29.3, 34.4, and 23.8, respectively, considerably surpassing the current Robeson permeability-selectivity upper bounds. At a MOF loading of 55 wt%, the membranes display a record-high 16-fold enhancement of H-2 permeability comparing with the neat polymer. With mild membrane processing conditions (e.g., a heating temperature less than 80 degrees C) and a performance continuously exceeding Robeson upper bounds for over 5300 h, the membranes exhibit enhanced compatibility with state-of-the-art membrane manufacturing processes. This performance results from intimate interactions between the polymer and MOFs via extensive, direct hydrogen bonding. This design approach offers a new route to ultraproductive membrane materials for energy-efficient gas separations.
机译：膜在减少用于气体分离的大量能源方面的作用越来越大。进一步扩大其在减少能量损失方面的效力需要通过易于与工业膜形成平台集成的简便技术进行快速分离，这仍然是一个挑战。此处报道了一种超渗透性聚酰亚胺/金属-有机骨架（MOF）混合膜，可实现多种应用（例如CO2捕集和氢气再生）的超快气体分离，同时提供与当前膜制造工艺的合成增强的兼容性。膜的CO2和H-2渗透率分别为2494和2932 Barrers，CO2 / CH4，H-2 / CH4和H-2 / N-2选择性分别为29.3、34.4和23.8。超过当前的Robeson渗透率-选择性上限。在55 wt％的MOF负载下，与纯聚合物相比，该膜的H-2渗透率显示出创纪录的16倍增强。在温和的膜加工条件下（例如，加热温度低于80摄氏度），并且性能持续超过Robeson上限超过5300小时，这些膜与先进的膜制造工艺之间的相容性增强。该性能归因于聚合物与MOF之间通过广泛，直接的氢键之间的密切相互作用。这种设计方法为超高效膜材料的节能气体分离提供了一条新途径。

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