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Citation: GUO Deng-Feng, LI Wei-Ming, PAN Jian-Bo, SHI Hong-Yan, CHEN Hua. Synthesis of Biodiesel with Solid Base CaO/MgO as Catalyst[J]. Chinese Journal of Applied Chemistry, ;2007, 24(10): 1149-1152. shu

Synthesis of Biodiesel with Solid Base CaO/MgO as Catalyst

1.
a Nanjing University of Science & Technology, Nanjing 210014;
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b Department of Chemical Engineering, Jiangsu Polytechnic University, Changzhou

Corresponding author: GUO Deng-Feng,
Received Date: 8 November 2006
Available Online: 8 May 2007
Fund Project: 江苏省科技成果转化专项基金资助项目(BA2006025) (BA2006025)

Transesterification of rape oil and methanol to prepare biodiesel with solid base CaO/MgO as the catalyst was studied.The catalyst was prepared by impregnation and had a high catalysis activity. Effect of the catalyst preparation conditions and the transesterification reaction conditions was investigated. The experiment showed that the optimum conditions of catalyst preparation were that the molar ratio of CaO to MgO was 1.0:5.44, the calcination temperature and the calcination time were 700℃ and 24 h respectively. The suitable conditions of transesterification were also obtained, where the molar ratio of methanol to oil was 6:1, the loading of the catalyst CaO/MgO was 3% of the oil weight, and the reaction temperature and reaction time was 70℃ and 4 h respectively. Under those conditions, the conversion of the oil was more than 98% and the biodiesel produced met the Austria DIN V 51 standard.
- solid base catalyst,
- transesterification,
- fatty acid methyl ester,
- biodiesel
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