SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (2): 263-269.

• • 上一篇    下一篇

Evaluation of Catalysts and Optimization of Reaction Conditions for the Dehydration of Methyl Lactate to Acrylates

张金锋, 林建平, 许晓波, 岑沛霖   

  1. Institute of Bioengineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hang-zhou 310027, China
  • 收稿日期:2007-07-12 修回日期:2007-12-22 出版日期:2008-04-28 发布日期:2008-04-28
  • 通讯作者: LIN Jianping,E-mail:linjp@zju.edu.cn
  • 基金资助:
    the Special Foundation for State Major Basic Research Program of China(2007CB707805,2004CCA05500)

Evaluation of Catalysts and Optimization of Reaction Conditions for the Dehydration of Methyl Lactate to Acrylates

ZHANG Jinfeng, LIN Jianping, XU Xiaobo, CEN Peilin   

  1. Institute of Bioengineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hang-zhou 310027, China
  • Received:2007-07-12 Revised:2007-12-22 Online:2008-04-28 Published:2008-04-28
  • Supported by:
    the Special Foundation for State Major Basic Research Program of China(2007CB707805,2004CCA05500)

摘要: The production of acrylates from biomass-originated lactic acid is of extraordinary importance,to overcome the increasing worldwide shortage of petroleum.In this study,the catalytic dehydration of methyl lactate over a calcium sulfate catalyst,with various promoters,has been carried out to identify potential catalyst/promoter com-binations for acrylate production.The best catalyst for methyl acrylate formation in this study has been calcium sulfate,with cupric sulfate and phosphates as promoters.The optimal mass ratio of m(CaSO4):m(CuSO4):m(Na2HPO4):m(KH2PO4)is 150.0:13.8:2.5:1.2.Effects of carrier gas,reaction temperature,feed concentration as well as contact time on the dehydration of methyl lactate have been investigated.With nitrogen as a carrier gas,a combined yield of acrylic acid and methyl acrylate is 63.9% from 60%(by mass)methyl lactate at 400℃ with 7.7 seconds contact time.

关键词: acrylate, contact time, cupric sulfate, dehydration, promoters

Abstract: The production of acrylates from biomass-originated lactic acid is of extraordinary importance,to overcome the increasing worldwide shortage of petroleum.In this study,the catalytic dehydration of methyl lactate over a calcium sulfate catalyst,with various promoters,has been carried out to identify potential catalyst/promoter com-binations for acrylate production.The best catalyst for methyl acrylate formation in this study has been calcium sulfate,with cupric sulfate and phosphates as promoters.The optimal mass ratio of m(CaSO4):m(CuSO4):m(Na2HPO4):m(KH2PO4)is 150.0:13.8:2.5:1.2.Effects of carrier gas,reaction temperature,feed concentration as well as contact time on the dehydration of methyl lactate have been investigated.With nitrogen as a carrier gas,a combined yield of acrylic acid and methyl acrylate is 63.9% from 60%(by mass)methyl lactate at 400℃ with 7.7 seconds contact time.

Key words: acrylate, contact time, cupric sulfate, dehydration, promoters