期刊
CHEMICAL ENGINEERING JOURNAL
卷 271, 期 -, 页码 276-280出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.02.094
关键词
ZIF-8; Dry-gel; Sonochemical synthesis; Knoevenagel condensation; Fe3O4 nanoparticles
资金
- National Research Foundation of Korea (NRF) - Korean Government (MEST) [2013005862]
- National Research Foundation of Korea [2013R1A2A2A05005862] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A zeolitic imidazolate framework, ZIF-8, was prepared via a variety of synthesis routes: solvothermal, microwave-assisted, sonochemical, mechanochemical, dry-gel, and microfluidic methods. Their textural properties and morphology were examined by surface area measurements and scanning electron microscopy, and compared with those of commercial ZIF-8. Although the BET surface areas fell within a range of 1250-1600 m(2) g(-1), the particle size of the samples prepared by dry-gel and sonochemical routes were significantly smaller than the others, which led to superior performance in the Knoevenagel condensation reaction. The effective incorporation of magnetic Fe3O4 nanoparticles into the ZIF-8 structure for easy particle separation in the liquid phase was feasible using solvothermal, dry-gel and mechanochemical synthesis methods. Dry-gel and mechanochemical synthesis produced a higher ZIF-8 yield. (C) 2015 Elsevier B.V. All rights reserved.
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