期刊
CHINESE JOURNAL OF CHEMISTRY
卷 30, 期 5, 页码 1040-1044出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.201100595
关键词
microporous materials; ionic liquids; microwave; carbon dioxide adsorption; ZIF-8
The zeolitic imidazolate framework-8 (ZIF-8) was successfully synthesized using ionic liquids as structure-directing agent under microwave irradiation. Ionic liquids are green solvents with low vapour pressure and good thermal stability. They are appropriate templates for microporous materials and ideal microwave absorbers. The microwave-assisted ionothermal synthesis applied in this paper was expected to be a promising method for the preparation of microporous materials. Results showed that the as-synthesized samples (300-500 nm in diameter) could be synthesized in a short time (60 min) and possessed regular morphology, stable structure and high thermal stability (up to 720 degrees C in argon atmosphere). Nitrogen adsorption-desorption test illustrated that samples produced by microwave heating had a higher surface area. Carbon dioxide adsorption test indicated that the samples synthesized by microwave heating had better carbon dioxide adsorption ability than those by conventional heating.
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