A superacid-catalyzed synthesis of porous membranes based on triazine frameworks for CO 2 separation

Xiang Zhu; Chengcheng Tian; Shannon M. Mahurin; Song Hai Chai; Congmin Wang; Suree Brown; Gabriel M. Veith; Huimin Luo; Honglai Liu; Sheng Dai

doi:10.1021/ja304879c

A superacid-catalyzed synthesis of porous membranes based on triazine frameworks for CO ₂ separation

Xiang Zhu, Chengcheng Tian, Shannon M. Mahurin, Song Hai Chai, Congmin Wang, Suree Brown, Gabriel M. Veith, Huimin Luo, Honglai Liu, Sheng Dai

Research output: Contribution to journal › Article › peer-review

433 Scopus citations

Abstract

A general strategy for the synthesis of porous, fluorescent, triazine-framework-based membranes with intrinsic porosity through an aromatic nitrile trimerization reaction is presented. The essence of this strategy lies in the use of a superacid to catalyze the cross-linking reaction efficiently at a low temperature, allowing porous polymer membrane architectures to be facilely derived. With functionalized triazine units, the membrane exhibits an increased selectivity for membrane separation of CO ₂ over N ₂. The good ideal CO ₂/N ₂ selectivity of 29 ± 2 was achieved with a CO ₂ permeability of 518 ± 25 barrer. Through this general synthesis protocol, a new class of porous polymer membranes with tunable functionalities and porosities can be derived, significantly expanding the currently limited library of polymers with intrinsic microporosity for synthesizing functional membranes in separation, catalysis, and energy storage/conversion.

Original language	English
Pages (from-to)	10478-10484
Number of pages	7
Journal	Journal of the American Chemical Society
Volume	134
Issue number	25
DOIs	https://doi.org/10.1021/ja304879c
State	Published - Jun 27 2012

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title = "A superacid-catalyzed synthesis of porous membranes based on triazine frameworks for CO 2 separation",

abstract = "A general strategy for the synthesis of porous, fluorescent, triazine-framework-based membranes with intrinsic porosity through an aromatic nitrile trimerization reaction is presented. The essence of this strategy lies in the use of a superacid to catalyze the cross-linking reaction efficiently at a low temperature, allowing porous polymer membrane architectures to be facilely derived. With functionalized triazine units, the membrane exhibits an increased selectivity for membrane separation of CO 2 over N 2. The good ideal CO 2/N 2 selectivity of 29 ± 2 was achieved with a CO 2 permeability of 518 ± 25 barrer. Through this general synthesis protocol, a new class of porous polymer membranes with tunable functionalities and porosities can be derived, significantly expanding the currently limited library of polymers with intrinsic microporosity for synthesizing functional membranes in separation, catalysis, and energy storage/conversion.",

author = "Xiang Zhu and Chengcheng Tian and Mahurin, {Shannon M.} and Chai, {Song Hai} and Congmin Wang and Suree Brown and Veith, {Gabriel M.} and Huimin Luo and Honglai Liu and Sheng Dai",

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T1 - A superacid-catalyzed synthesis of porous membranes based on triazine frameworks for CO 2 separation

AU - Zhu, Xiang

AU - Tian, Chengcheng

AU - Mahurin, Shannon M.

AU - Chai, Song Hai

AU - Wang, Congmin

AU - Brown, Suree

AU - Veith, Gabriel M.

AU - Luo, Huimin

AU - Liu, Honglai

AU - Dai, Sheng

PY - 2012/6/27

Y1 - 2012/6/27

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AB - A general strategy for the synthesis of porous, fluorescent, triazine-framework-based membranes with intrinsic porosity through an aromatic nitrile trimerization reaction is presented. The essence of this strategy lies in the use of a superacid to catalyze the cross-linking reaction efficiently at a low temperature, allowing porous polymer membrane architectures to be facilely derived. With functionalized triazine units, the membrane exhibits an increased selectivity for membrane separation of CO 2 over N 2. The good ideal CO 2/N 2 selectivity of 29 ± 2 was achieved with a CO 2 permeability of 518 ± 25 barrer. Through this general synthesis protocol, a new class of porous polymer membranes with tunable functionalities and porosities can be derived, significantly expanding the currently limited library of polymers with intrinsic microporosity for synthesizing functional membranes in separation, catalysis, and energy storage/conversion.

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A superacid-catalyzed synthesis of porous membranes based on triazine frameworks for CO ₂ separation

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