Shape‐Recognition in an Al‐MOF Enables High C <sub>3</sub> F <sub>6</sub> Adsorption and Size‐Sieving Separation of C <sub>3</sub> F <sub>6</sub> /C <sub>3</sub> F <sub>8</sub>
Abstract
ABSTRACT The purification of perfluoropropane (C 3 F 8 ) relies on the selective removal of trace perfluoropropylene (C 3 F 6 ), which remains challenging due to their similar physicochemical properties. Herein, we report a rigid Al‐based MOF, HIAM‐344, featuring nitrate‐regulated narrow pore windows and large cavities that enable simultaneous molecular sieving of C 3 F 6 /C 3 F 8 and high C 3 F 6 adsorption at low pressure. HIAM‐344 exhibits a record‐high C 3 F 6 uptake of 78.8 cm 3 g −1 at 298 K and 1 bar, and maintains a remarkably high capacity of 59.2 cm 3 g −1 at a low pressure of 0.01 bar. Dynamic breakthrough experiments demonstrate complete splitting of C 3 F 6 and C 3 F 8 , and direct production of electronic‐grade C 3 F 8 (>99.999%). Computational studies reveal that the outstanding separation performance originates from the synergistic size and shape recognition, as well as the favorable adsorbate‐adsorbent interactions.
Article Details
Authors (10)
Xin Zhou
Xuxuan Su
Hoffmann Institute of Advanced Materials Shenzhen Polytechnic University Shenzhen P. R. China
Shenfang Li
Hoffmann Institute of Advanced Materials
Muyang Zhou
Jinze Yao
School of Chemistry and Chemical Engineering South China University of Technology Guangzhou P. R. China
Yilu Wu
School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat‐sen University Guangzhou China
Liang Yu
State Key Laboratory of Catalysis
Kecai Xiong
School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu P. R. China
Qibin Xia
School of Chemistry and Chemical Engineering State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou China
Hao Wang
Division of Quantitative Sciences, Department of Oncology Johns Hopkins University School of Medicine Baltimore Maryland USA