合理制备用于选择性捕获二氧化碳的苯联多孔聚合物

IF 2.5 4区 工程技术 Q3 CHEMISTRY, ANALYTICAL
Xiaofei Yan, Fuqun Zhai, Zifei Sun, Jingwen Chen, Dingming Xue, Jie Miao
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引用次数: 0

摘要

人们制备了各种多孔聚合物材料,用于从混合气体中分离二氧化碳。然而,这些材料的合成通常需要复杂的工艺、昂贵的单体和成本高昂的催化剂,使得吸附剂难以实现工业化应用。在此,我们开发了一种策略,通过两种廉价单体(即四苯基硅烷和 1,4-双(溴甲基)苯)的简易缩合反应,制备出一系列含苯环的多孔聚合物材料(B-PPMs)。通过一系列表征,B-PPMs 被证实具有可利用的表面积、较大的孔隙率和较好的孔径。在 273 K 和 1 bar 条件下,B-PPM-2 对 CO2 的吸附量最高,达到 67 cm3-g-1,而在 273 K 和 298 K 条件下,对 CO2/N2 的选择性分别达到 64.5 和 51.9。此外,吸附剂 B-PPM-2 在温和的条件下经过五个循环的突破实验后可以完全再生,这为从混合物中选择性捕获二氧化碳提供了可能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rational Fabrication of Benzene-Linked Porous Polymers for Selective CO2 Capture
Various porous polymer materials have been prepared for the separation of CO2 from mixed gases. However, complex processes, expensive monomers, and costly catalysts are commonly used for their synthesis, making the adsorbents difficult to achieve in industrial applications. Herein, we developed a strategy to fabricate a series of benzene rings containing porous polymer materials (B-PPMs) via a facile condensation reaction of two inexpensive monomers, namely tetraphenylsilane and 1,4-bis(bromomethyl)benzene. The B-PPMs are verified to have accessible surface areas, large pore volumes, and appreciate pore sizes via a series of characterizations. The B-PPM-2 exhibits the best CO2 adsorption amount of 67 cm3·g−1 at 273 K and 1 bar, while the CO2/N2 selectivity can reach 64.5 and 51.9 at 273 K and 298 K, respectively. Furthermore, the adsorbent B-PPM-2 can be completely regenerated after five cycles of breakthrough experiments under mild conditions, which may provide promising candidates for selective capture of CO2 from mixtures.
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来源期刊
Separations
Separations Chemistry-Analytical Chemistry
CiteScore
3.00
自引率
15.40%
发文量
342
审稿时长
12 weeks
期刊介绍: Separations (formerly Chromatography, ISSN 2227-9075, CODEN: CHROBV) provides an advanced forum for separation and purification science and technology in all areas of chemical, biological and physical science. It publishes reviews, regular research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. There are, in addition, unique features of this journal: Manuscripts regarding research proposals and research ideas will be particularly welcomed. Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Manuscripts concerning summaries and surveys on research cooperation and projects (that are funded by national governments) to give information for a broad field of users. The scope of the journal includes but is not limited to: Theory and methodology (theory of separation methods, sample preparation, instrumental and column developments, new separation methodologies, etc.) Equipment and techniques, novel hyphenated analytical solutions (significantly extended by their combination with spectroscopic methods and in particular, mass spectrometry) Novel analysis approaches and applications to solve analytical challenges which utilize chromatographic separations as a key step in the overall solution Computational modelling of separations for the purpose of fundamental understanding and/or chromatographic optimization
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