Optimization of Microwave Pyrolysis of Castor Oil to Sebacic Acid

Authors

  • Yang Yu School of Petroleum and Chemical Engineering, Shenyang University of Technology
  • Guo-Liang Shen School of Petroleum and Chemical Engineering, Shenyang University of Technology
  • Tie-Jun Xu School of Petroleum and Chemical Engineering, Shenyang University of Technology
  • Yong-Jie Wang School of Petroleum and Chemical Engineering, Shenyang University of Technology
  • Rui-Yang Wen School of Petroleum and Chemical Engineering, Shenyang University of Technology

Keywords:

Castor oil, Microwave, Cracking, Sebacic acid

Abstract

Castor oil is a widely used biomass energy source. In this paper, the process conditions for the preparation of sebacic acid by cracking castor oil using the microwave method were investigated using environmentally friendly and recyclable liquid paraffin (petrolatum) as a solvent. The optimum conditions for the reaction were determined in the experiments as follows: the mass ratio of solvent: castor oil: sodium hydroxide was 4:1:2.5 and the concentration of sodium hydroxide solution was 50% (w/t). The average microwave power was 210 W, the temperature was about 280 °C, the cracking time was 25 min under nitrogen protection, and the yield of sebacic acid was measured to be 85%. The solvents can be recycled and the recovered solvent can be used again without affecting the yield of sebacic acid. The solvent recovery was more than 92%.

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Published

2023-09-20

Issue

Vol. 18 No. 4 (2023)

Section

Research Article or Brief Communication