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A Strategy for Constructing Pore‐Space‐Partitioned MOFs with High Uptake Capacity for C<sub>2</sub> Hydrocarbons and CO<sub>2</sub>

Yong WangCollege of Materials Science and Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 ChinaXiaoxia JiaDepartment of Chemistry University of California Riverside CA 92521 USAHuajun YangDepartment of Chemistry University of California Riverside CA 92521 USAYanxiang WangCollege of Materials Science and Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 ChinaXitong ChenDepartment of Chemistry University of California Riverside CA 92521 USAAnh N. HongDepartment of Chemistry University of California Riverside CA 92521 USAJinping LiShanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of Technology Taiyuan Shanxi 030024 ChinaXianhui BuDepartment of Chemistry and Biochemistry California State University Long Beach Long Beach CA 90840 USAPingyun FengDepartment of Chemistry University of California Riverside CA 92521 USA

2020en

ABI

Annotatsiya

Abstract Introduction of pore partition agents into hexagonal channels of MIL‐88 type (acs topology) endows materials with high tunability in gas sorption. Here, we report a strategy to partition acs framework into pacs (partitioned acs) crystalline porous materials (CPM). This strategy is based on insertion of in situ synthesized 4,4′‐dipyridylsulfide (dps) ligands. One third of open metal sites in the acs net are retained in pacs MOFs; two thirds are used for pore‐space partition. The Co 2 V‐pacs MOFs exhibit near or at record high uptake capacities for C 2 H 2 , C 2 H 4 , C 2 H 6 , and CO 2 among MOFs. The storage capacity of C 2 H 2 is 234 cm 3 g −1 (298 K) and 330 cm 3 g −1 (273 K) at 1 atm for CPM‐733‐dps (the Co 2 V‐BDC form, BDC=1,4‐benzenedicarboxylate). These high uptake capacities are accomplished with low heat of adsorption, a feature desirable for low‐energy‐cost adsorbent regeneration. CPM‐733‐dps is stable and shows no loss of C 2 H 2 adsorption capacity following multiple adsorption–desorption cycles.

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Identifikatorlar

DOI: 10.1002/anie.202008696

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