Citation: FAN Ming-ming, LIU Yan-lei, ZHANG Ping-bo, JIANG Ping-ping. Preparation of magnetic core-shell CaO-MgO@CoFe₂O₄ solid base and its catalytic performance in the transesterification of soybean oil to biodiesel[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(4): 422-427. shu

Preparation of magnetic core-shell CaO-MgO@CoFe₂O₄ solid base and its catalytic performance in the transesterification of soybean oil to biodiesel

FAN Ming-ming ^1,2 ,
LIU Yan-lei ^1,2 ,
ZHANG Ping-bo ^1,2,*,, ,
JIANG Ping-ping ^1,2

1.
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China;
2.
The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122, China

Corresponding author: ZHANG Ping-bo, pingbozhang@126.com
Received Date: 30 October 2015
Revised Date: 11 January 2016

Figures(9)

A magnetic core-shell CaO-MgO@CoFe₂O₄ solid base was prepared with oxalates as the precursor through a two-step method, which was used as the catalyst for the transesterification of soybean oil to biodiesel with methanol. The CaO-MgO@CoFe₂O₄ catalyst was characterized by magnetic hysteresis loop, X-ray diffraction (XRD), CO₂-TPD and transmission electron microscopy (TEM); the effects of core-shell molar ratio, catalyst calcination temperature, reaction temperature, reaction time, methanol/oil molar ratio and catalyst amount on the yield of biodiesel were investigated. The results indicated that over the CaO-MgO@CoFe₂O₄ catalyst with a core-shell molar ratio of 1:6 and calcined at 700 ℃, the biodiesel yield reaches 97.1% after conducting the transesterification reaction at 65 ℃ for 3 h, when the methanol/oil mol ratio is 12 and the amount of catalyst is 1.0% by mass. The catalyst exhibits excellent reusability; the biodiesel yield remains above 90% after reusing for four cycles.
- biodiesel,
- magnetic solid base catalyst,
- transesterification,
- soybean oil,
- CaO-MgO@CoFe₂O₄
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Preparation of magnetic core-shell CaO-MgO@CoFe2O4 solid base and its catalytic performance in the transesterification of soybean oil to biodiesel

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通讯作者: 陈斌, bchen63@163.com

Preparation of magnetic core-shell CaO-MgO@CoFe₂O₄ solid base and its catalytic performance in the transesterification of soybean oil to biodiesel