An Efficient Polymer Molecular Sieve for Membrane Gas Separations

被引：920

作者：

Carta, Mariolino ^{[1
]}

Malpass-Evans, Richard ^{[1
]}

Croad, Matthew ^{[1
]}

Rogan, Yulia ^{[1
]}

Jansen, Johannes C. ^{[2
]}

Bernardo, Paola ^{[2
]}

Bazzarelli, Fabio ^{[2
]}

McKeown, Neil B. ^{[1
]}

机构：

[1] Cardiff Univ, Sch Chem, Cardiff CF10 3AT, S Glam, Wales

[2] Univ Calabria, ITM CNR, Consiglio Nazl Ric, Inst Membrane Technol, I-87030 Arcavacata Di Rende, CS, Italy

来源：

SCIENCE | 2013年 / 339卷 / 6117期

基金：

英国工程与自然科学研究理事会;

关键词：

INTRINSIC MICROPOROSITY; TROGERS BASE; PERMEATION PARAMETERS; FREE-VOLUME; PERMEABILITY; PERFORMANCE; TRANSPORT; MONOMERS; NITROGEN; ANALOGS;

D O I：

10.1126/science.1228032

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Microporous polymers of extreme rigidity are required for gas-separation membranes that combine high permeability with selectivity. We report a shape-persistent ladder polymer consisting of benzene rings fused together by inflexible bridged bicyclic units. The polymer's contorted shape ensures both microporosity-with an internal surface area greater than 1000 square meters per gram-and solubility so that it is readily cast from solution into robust films. These films demonstrate exceptional performance as molecular sieves with high gas permeabilities and good selectivities for smaller gas molecules, such as hydrogen and oxygen, over larger molecules, such as nitrogen and methane. Hence, this polymer has excellent potential for making membranes suitable for large-scale gas separations of commercial and environmental relevance.

引用

页码：303 / 307

页数：5