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陈立功, Wenlei
Journal of Molecular Catalysis A: Chemical 246 (2006) 24-32,-0001,():
-1年11月30日
Methyl ester of fatty acids, derived from vegetable oils or animal fats and known as biodiesel, is a promising alternative diesel fuel regarding the limited resources of fossil fuel and the environmental concerns. In this work, an environmentally benign process for the methanolysis of soybean oil to methyl esters using calcined Mg–Al hydrotalcites as solid base catalysts in a heterogeneous manner was developed. When the reaction was carried out at reflux of methanol, with a molar ratio of soybean oil to methanol of 15:1, a reaction time 9 h and a catalyst amount 7.5%, the oil conversion was 67%. The calcined hydrotalcite with an Mg/Al ratio of 3.0 derived from calcination at 773K was found to be the optimum catalyst that can give the highest basicity and the best catalytic activity for this reaction. The catalysts were characterized with SEM, XRD, IR, DTA-TG and Hammett titration method. The activity of the catalysts for the methanolysis reaction was correlated closely with their basicity as determined by the Hammett method.
Methanolysis, Activated Mg–Al hydrotalcite, Solid base catalyst, Calcination, Biodiesel
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陈立功, Ligong
Journal of Chromatography A, 986 (2003) 297-302,-0001,():
-1年11月30日
The
Electrochromatography,
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【期刊论文】Racemization of R-2-amino-1-butanol over Rh-doped Co/γ-Al2O3 catalyst
陈立功, Yuecheng
Journal of Catalysis 236 (2005) 176-180,-0001,():
-1年11月30日
The racemization of R-2-amino-1-butanol proceeded effectively over a Co–Rh/γ-Al2O3 catalyst in a fixed-bed reactor. The catalyst was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, temperature-programmed reduction, and transmission electron microscopy. For these catalysts, Co0 was believed to be the active sites of the catalyst, and the presence of the optimum amount of rhodium led to highly dispersed active species. The activity, selectivity, and stability of the catalyst were demonstrated, and racemic 2-amino-1-butanol was obtained with a yield >82% under the optimum reaction conditions.
Racemization, Co–Rh/, γ-Al2O3 catalyst, Co/, γ-Al2O3 catalyst, R-2-amino-1-butanol, S-2-amino-1-butanol
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陈立功, Yuecheng
Catalysis Communications 8 (2007) 1102-1106,-0001,():
-1年11月30日
The
H-ZSM-5,
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