期刊
ENERGY CONVERSION AND MANAGEMENT
卷 153, 期 -, 页码 462-472出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2017.10.023
关键词
Biodiesel; Firmiana platanifolia L.f.; Transesterification; Magnetic basic polymeric ionic liquids; Kinetics
资金
- National Natural Science Foundation of China [21576059, 21666008]
- Key Technologies R & D Program of China [2014BAD23B01]
Biodiesel, typically derived from non-edible vegetable oils via heterogeneous catalysts, is being deemed as a promising alternative to fossil fuels. Herein, basic polymeric ionic liquids (PILs) immobilized on magnetic mesoporous carrier (Fe3O4@SiO2@SBA-15), FnmS-PILs, were synthesized through the facile radical polymerization and anion exchange methods, and were further utilized to catalyze transesterification of non-food feedstock crude Firntiana platanifolia L.f. oil (CFPO, acid value of 1.20 mg KOH/g) into biodiesel directly. The characterization results demonstrated that FnmS-PILs with uniform core shell structure, moderate surface area (153.2 m(2)/g), pore size (4.1 nm), strong magnetism (13.6 emu/g) and relative higher basicity (2.3 mmol/g) exhibited high catalytic performance, giving a high biodiesel yield of 92.8 wt% under mild reaction conditions (9/1 methanol/oil molar ratio, 4 wt% catalyst dosage at 85 degrees C for 5 h). Furthermore, kinetic study was also investigated accordingly, wherein the activation energy was found to be 51.6 kJ/mol along with a determined pseudo first order model. More importantly, the catalyst could be recovered easily by means of magnetic force and remained sufficiently active in five consecutive cycles.
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