钛
选择性
膜
材料科学
制作
吸附
气体分离
星团(航天器)
化学工程
纳米技术
化学
催化作用
物理化学
有机化学
计算机科学
冶金
医学
工程类
生物化学
病理
程序设计语言
替代医学
作者
Chen Wang,Yanwei Sun,Libo Li,Rajamani Krishna,Taotao Ji,Sixing Chen,Jiahui Yan,Yi Liu
标识
DOI:10.1002/anie.202203663
摘要
Although having shown great promise for efficient gas separation, relevant study of Ti-MOF membranes remains very scarce, owing to limited Ti source types and uncertain factors which dominate the separation properties. In this work, we pioneered the use of the Ti8 (μ2 -O)8 (OOCC6 H5 )16 cluster as the Ti source of MIL-125 membranes, which led to lower reaction temperature and higher missing-linker number within the framework and therefore, enhanced CO2 /N2 adsorption selectivity. The MIL-125 membrane prepared by combining single-mode microwave heating with tertiary growth displayed an ideal CO2 /N2 selectivity of 38.7, which ranked the highest among all pristine pure MOF membranes measured under comparable conditions. In addition, the ideal H2 /N2 and H2 /CH4 selectivity was as high as 64.9 and 40.7, thus showing great promise for versatile utility in gas separation.
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