期刊
CHEMSUSCHEM
卷 10, 期 8, 页码 1669-1674出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201700239
关键词
5-hydroxymethylfurfural; fructose dehydration; ionic liquids; NH4-exchange; zeolites
资金
- National Natural Science Foundation of China [51422212, 21307142]
- Key Projects of the National Science and Technology Pillar Program [2015BAD15B08]
- Key Research Program of Frontier Sciences of CAS [QYZDB-SSW-JSC037]
- Ningbo Science and Technology Bureau [2015A610248, 2015B11003, 2014D10004]
ZeoliteL was synthesized by the hydrothermal method and post-treated by NH4 exchange to adjust its acidity. The samples were systematic characterized by various techniques including XRD, X-ray fluorescence spectroscopy, N-2 adsorption-desorption, scanning electron microscopy, pyridine IR spectroscopy, and NH3 temperature-programmed desorption. The results demonstrated that the NH4-exchange post-treatment increased the surface area, micropore volume, and acidity of zeoliteL. The catalytic performance of the samples was tested in the dehydration of fructose to 5-hydroxymethylfurfural (HMF) in ionic liquid (1-butyl-3-methylimidazolium bromide, [bmim]Br). 99.1% yield of HMF was obtained when the KL-80 degrees C-1h sample (KL zeolite treated with 1m NH4NO3 solution at 80 degrees C for 1h) was used. The high efficiency could be attributed to the appropriate acid properties of the catalyst. The zeolite catalyst could be reused four times without significant decrease in activity.
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