期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 25, 期 68, 页码 15516-15524出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201903952
关键词
acetylene; adsorptive separation; ethylene; gallate; metal-organic frameworks
资金
- Zhejiang Provincial Natural Science Foundation of China [LR17B060001]
- National Natural Science Foundation of China [21722609, 21436010]
- National Key R&D Program of China [2016YFB0301500]
The separation of acetylene from ethylene is of paramount importance in the purification of chemical feedstocks for industrial manufacturing. Herein, an isostructural series of gallate-based metal-organic frameworks (MOFs), M-gallate (M = Ni, Mg, Co), featuring three-dimensionally interconnected zigzag channels, the aperture size of which can be finely tuned within 0.3 angstrom by metal replacement. Controlling the aperture size of M-gallate materials slightly from 3.69 down to 3.47 angstrom could result in a dramatic enhancement of C2H2/C2H4 separation performance. As the smallest radius among the studied metal ions, Ni-gallate exhibits the best C2H2/C2H4 adsorption separation performance owing to the strongest confinement effect, ranking after the state-of-the-art UTSA-200a with a C2H4 productivity of 85.6 molL(-1) from 1:99 C2H2/C2H4 mixture. The isostructural gallate-based MOFs, readily synthesized from inexpensive gallic acid, are demonstrated to be a new top-performing porous material for highly efficient adsorption of C2H2 from C2H4.
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