期刊
ENERGY & FUELS
卷 30, 期 12, 页码 10739-10746出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.6b01212
关键词
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资金
- National Natural Science Foundation of China [21176121]
- Foundation from State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University [ZK201305]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
A magnetically recyclable and efficient catalyst for biodiesel synthesis was fabricated by confining the Bronsted ionic liquid 1,4-butanediyl-3,3'-bis(3-sulfopropyl) imidazolium dihydrogensulfate in an amino-functionalized magnetic metal organic -framework composite (Fe3O4@NH2-MIL-88B(Fe)) through a simple and efficient strategy via the amino groups. The catalyst was systematically characterized, proving ionic liquid was grafted in the amino-functionalized carrier, and the catalyst was spindle-shaped with superparamagnetism (7.2 emu/g). The prepared catalyst with high acidity (1.76 mmol H+ g(-1)) exhibited good catalytic activity in biodiesel synthesis from oleic acid and ethanol with a yield of 93.2%, optimized by Box-Behnken response surface methodology. The fine catalytic performance of the catalyst was mainly due to the combination of the characteristics of the ionic liquid and the structure of Fe3O4.@NH2-MIL-88B(Fe). Moreover, the catalyst was recycled without significant loss of activity after being used for six runs and could be magnetically separated in magnetic force without obvious mass loss.
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