NDLI: Synthetic modulation of micro- and mesopores in polycyanurate networks for adsorptions of gases and organic hydrocarbons

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Polymer Chemistry Vol - 8 Issue - 5

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Synthetic modulation of micro- and mesopores in polycyanurate networks for adsorptions of gases and organic hydrocarbons

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Biao Shen, Changjiang Deng, Gaoyang Yan, Jun Wang, Zhonggang
Copyright Year	2017
Abstract	Three new cyanate monomers tris(4-cyanatophenyl)amine, 9-(4′-cyanatophenyl)-3,6-dicyanatocarbazole and 3,6-dicyanatocarbazole with varied geometrical shape, size and number of functional groups were designed and synthesized, which were then thermally polymerized, respectively, to create three micro- and mesoporous polycyanurate networks (PCN-TA, PCN-TC and PCN-DC). The resultant polymers show tunable pore sizes from 1.17 nm to 17.3 nm and BET surface areas from 393 to 721 m2 g−1. Among the three samples, PCN-TA with the smallest pore size possesses the largest uptake for H2 (1.13 wt%, 77 K/1.0 bar) and CO2 (11.0 wt%, 273 K/1.0 bar), and meanwhile displays the highest CO2/CH4 adsorption selectivity up to 24 (IAST method). The gas adsorption/separation properties are studied and explained in terms of the variations of porous and chemical structures of polycyanurate networks as well as the critical temperature, kinetic diameter and polarity of gas molecules. In addition, it is interesting to observe that PCN-TA can uptake 100.9 wt% benzene at 298 K and P/P0 = 0.9. Moreover, its adsorption capacity for benzene is about five times as high as that of cyclohexane, exhibiting promising application in selective adsorption of benzene from the benzene/cyclohexane mixture.
Starting Page	1074
Ending Page	1083
Page Count	10
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	8
Issue Number	6
Journal	Polymer Chemistry
DOI	10.1039/c6py02050j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	BET International Alphabet of Sanskrit Transliteration Mesoporous material Adsorption Benzene Kinetic diameter Cyclohexane Selective adsorption Cyanate Phase transition
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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