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Citation: HU Xiu-ying, MA Di, YANG Ting-hai, DENG Yu-gou. Preparation of solid base K2CO3/Al2O3 and catalytic conversion of waste cooking oil to biodiesel[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(6): 683-689. shu

Preparation of solid base K2CO3/Al2O3 and catalytic conversion of waste cooking oil to biodiesel

  • 1.

    School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China

  • Corresponding author: HU Xiu-ying, 
  • Received Date: 25 November 2013
    Available Online: 24 January 2014

    Fund Project: 江苏省自然科学基金(BK2011260) (BK2011260)江苏理工学院青年基金(KYY12021) (KYY12021)江苏省大学生实践创新训练计划(SC12043)。 (SC12043)

  • The solid base catalyst K2CO3/Al2O3 was prepared by impregnation method. The factors to influence the reaction activity of producing biodiesel from waste cooking oil including the loading of active component K2CO3 on the catalyst, the roasting temperature and the roasting time were investigated. The catalysts were characterized by FT-IR, XRD, TG-DTG, SEM and BET techniques. The results show that the catalyst exhibits an excellent catalytic activity for the transesterification of waste cooking oil to biodiesel. The solid base catalyst loaded with 50% K2CO3 and calcinated at 500 ℃ for 3 h exhibits a high catalytic activity for the transesterification, and the yield of biodiesel reaches 86.70%. The characterization reveals that the catalyst activity of K2CO3/Al2O3 is associated with the formation of new crystalline phase due to the interaction between K2CO3 and Al2O3 during calcination. After the catalyst is reused for 4 times, the yield of biodiesel is still above 75%. The main quality indexes of the product can reach the biodiesel B100 standard completely.
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