In Situ Stimulus Response Study on the Acetylene/Ethylene Purification Process in MOFs.

Autor: Cai LZ; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China., Yu XY; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China.; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China., Wang MS; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China., Yuan DQ; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China., Chen WF; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China.; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China., Wu MY; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China., Guo GC; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, People's Republic of China.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Oct 08, pp. e202417072. Date of Electronic Publication: 2024 Oct 08.
DOI: 10.1002/anie.202417072
Abstrakt: Efficient removal of acetylene (C 2 H 2 ) impurities from polymer-grade ethylene (C 2 H 4 ) in a simple, clean manner remains a challenging goal in industry. The use of porous materials such as metal-organic frameworks (MOFs) is promising for this aim but the acquisition of high purification performance is still hindered by few knowledge on the purification process because the previous conclusions were derived basically from the non-breakthrough tests or ignored the influence of structural difference (crystal structure, morphology, or defect). Here we propose an unprecedented in situ stimulus response strategy to minimize the influence of structural difference, obtain the gas-loading crystal structures of the same MOF before and after light or heat stimulation, directly observe the evolution of pore charge distribution and pore⋅⋅⋅gas interactions under light/heat induction, and finally summarizes the favorable structure for highly efficient purification of C 2 H 4 . This study opens a new route to understand the relationship between the structure and separation performance for porous materials.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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