journal article·2024-07-01

Highly Selective Separation of Benzene/Cyclohexane by Three-Dimensional Covalent Organic Framework with 8,8-Connected bcu Net Topology

Yu Zhao, Tsukasa Irie, Dan Wen, Haruna Mabuchi, Kohki Sasaki, Mika Nozaki, Rina Tomioka, Weidong Zhu, Saikat Das, Teng Ben, Yuichi Negishi

ACS Materials Letters· Volume 6· Issue 7
Publisher page

Abstract

Here, we report the discovery of the first (8,8)-connected three-dimensional (3D) covalent organic framework (COF), TUS-88, having bcu topology by linking an 8-connected D 4h -symmetric quadrangular prism node to an 8-connected D 2h -symmetric tetragonal prism node. Derived from the π-aromatic conjugated system of pyrene and the abundant aromatic phenyl rings composing the COF scaffold, which promotes stronger π ··· π interactions with aromatic benzene (Bz) molecules, a superlative Bz uptake of 464 cm 3 g –1 was achieved for TUS-88, coupled with exemplary cyclohexane (Cy) uptake of 224 cm 3 g –1 and ideal Bz/Cy selectivity of 2.07 which are the current benchmark. Breakthrough experiments accomplished using a Bz/Cy (1:1, v/v) mixture corroborated the preferential adsorption of Bz by the COF from the mixture to generate high-purity Cy with a significant time interval of 75.4 min g –1 and a record-setting Bz/Cy breakthrough selectivity of 2.46.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Covalent Organic Framework Applications · Metal-Organic Frameworks: Synthesis and Applications · Radioactive element chemistry and processing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, China

Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, China

Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan

Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan

Funding

National Key Research and Development Program of China · Japan Society for the Promotion of Science · Ogasawara Foundation for the Promotion of Science and Engineering · Yazaki Memorial Foundation for Science and Technology · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province

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