相关实验视频

Updated: Jun 7, 2025

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Published on: October 10, 2013

一个微孔的与结合的有机框架,由结合的螺旋链隔离开放的皮林位点,以有效地分离和

Lei He¹, Yunbin Li¹, Lu Li¹

¹Fujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China.

Angewandte Chemie (International ed. in English)

|November 20, 2024

概括

我们开发了一种新的结有机框架 (HOF-FJU-168) 以实现高效的/ (Xe/Kr) 分离. 这种材料实现了高XE吸附性和选择性,超过了现有的HOF用于气体净化.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
分离科学分离科学

背景情况:

对于各种应用来说,有效分离 (Xe) 和 (Kr) 是至关重要的.
现有的结有机框架 (HOF) 由于有限的结合点,难以进行气体分离.

研究的目的:

开发一种能够在环境条件下高效地进行 Xe/Kr 分离的新型HOF.
调查结构与财产关系,这些关系决定了HOF中的Xe/Kr选择性.

主要方法:

合成了一种新的微孔HOF (HOF-FJU-168) 使用结螺旋链.
在296K和1bar的气体吸附和选择性测量.
实时分离性能评估的突破性实验.
单晶X射线衍射和分子建模用于机械洞察力.

主要成果:

HOF-FJU-168a的Xe吸附能力为78.31cm3/g,Xe/Kr IAST的选择性为22.0. 这表明了Xe的吸附能力.
实现了8.6的分离系数和184毫升/克的高纯度Kr产量 (>99.5%).
该材料具有出色的热和化学稳定性,并且可再生.
分子建模显示,开放的烯位点会产生微电场,增强XE相互作用.

结论:

HOF-FJU-168代表了使用HOFs Xe/Kr分离的突破.
独特的孔隙结构和静电潜力是其卓越性能的关键.
这种材料为工业 Xe/Kr 分离挑战提供了有前途的解决方案.

关键词:

气体分离器的气体分离器结有机框架结有机框架它是微孔的微孔.一个开放的Pyrene网站.///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

更多相关视频

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides

Published on: July 14, 2015

相关概念视频

Noble Gases

Noble Gases

The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.

VSEPR Theory and the Effect of Lone Pairs

VSEPR Theory and the Effect of Lone Pairs

Effect of Lone Pairs of Electrons on Molecule Geometry

Ion Exchange

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...