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A Porous Polyaromatic Solid for Vapor Adsorption of Xylene with High Efficiency, Selectivity, and Reusability
Author(s) -
Sumida Ryuki,
Matsumoto Takeshi,
Yokoi Toshiyuki,
Yoshizawa Michito
Publication year - 2022
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202202825
Subject(s) - reusability , benzene , adsorption , selectivity , cyclohexane , toluene , xylene , chemical engineering , porosity , p xylene , chemistry , vapor pressure , porous medium , materials science , selective adsorption , organic chemistry , catalysis , software , computer science , engineering , programming language
Abstract Development of porous materials capable of capturing volatile organic compounds (VOCs), such as benzene and its derivatives, with high efficiency, selectivity, and reusability is highly demanded. Here we report unusual vapor adsorption behavior toward VOCs by a new porous solid, composed of a polyaromatic capsule bearing a spherical nanocavity with subnano‐sized windows. Without prior crystallization and high‐temperature vacuum drying, the porous polyaromatic solid exhibits the following five features: vapor adsorption of benzene over cyclohexane with 90 % selectivity, high affinity toward o ‐xylene over benzene and toluene with >80 % selectivity, ortho ‐selective adsorption ability (>50 %) from mixed xylene isomers, tight VOCs storage even under high temperature and vacuum conditions, and at least 5 times reusability for xylene adsorption. The observed adsorption abilities are accomplished at ambient temperature and pressure within 1 h, which has not been demonstrated by organic/inorganic porous materials reported previously.