SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (10): 1519-1523.DOI: 10.1016/j.cjche.2017.03.029

• Energy, Resources and Environmental Technology • 上一篇    下一篇

Novel efficient procedure for biodiesel synthesis from waste oils with high acid value using 1-sulfobutyl-3-methylimidazolium hydrosulfate ionic liquid as the catalyst

Shuanglan Hu1, Ying Li2, Wenyong Lou2,3   

  1. 1 School of Biosciences and Bioengineering, South China University of Technology, Guangzhou 510640, China;
    2 School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510640, China;
    3 State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
  • 收稿日期:2016-10-07 修回日期:2017-03-07 出版日期:2017-10-28 发布日期:2017-05-05
  • 通讯作者: Wenyong Lou,E-mail address:wylou@scut.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21676104, 21336002, 21376096), the Open Funding Project of the State Key Laboratory of Bioreactor Engineering, and the Program of State Key Laboratory of Pulp and Paper Engineering (2017ZD05).

Novel efficient procedure for biodiesel synthesis from waste oils with high acid value using 1-sulfobutyl-3-methylimidazolium hydrosulfate ionic liquid as the catalyst

Shuanglan Hu1, Ying Li2, Wenyong Lou2,3   

  1. 1 School of Biosciences and Bioengineering, South China University of Technology, Guangzhou 510640, China;
    2 School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510640, China;
    3 State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2016-10-07 Revised:2017-03-07 Online:2017-10-28 Published:2017-05-05
  • Supported by:
    Supported by the National Natural Science Foundation of China (21676104, 21336002, 21376096), the Open Funding Project of the State Key Laboratory of Bioreactor Engineering, and the Program of State Key Laboratory of Pulp and Paper Engineering (2017ZD05).

摘要: Preparation of biodiesel from waste oils containing 72% of free fatty acids catalyzed by a novel Brønsted acidic ionic liquid 1-sulfobutyl-3-methylimidazolium hydrosulfate ([BHSO3MIM] [HSO4]) was systematically investigated. The optimum molar ratio of methanol to waste oils, catalyst amount, reaction temperature and reaction time were 8/1, 10% (based on the mass of waste oils), 140℃ and 6 h, respectively, under which the obtained yield of biodiesel reached 94.9%. Also,[BHSO3MIM] [HSO4] as a catalyst still retained around 97% of its original catalytic activity after successive re-use of 5 batches (6 h per batch), showing the excellent operational stability. Moreover, the acidic IL[BHSO3MIM] [HSO4] was able to efficiently catalyze conversions of waste oils with different amounts of FFAs (free fatty acids) into biodiesel, and showed tremendous application potential. Therefore, an efficient and environmentally friendly catalyst is provided for the synthesis of biodiesel from waste oils with high acid value.

关键词: 1-Sulfobutyl-3-methylimidazolium, hydrosulfate, Biodiesel, Waste oils with high acid value, Catalyst

Abstract: Preparation of biodiesel from waste oils containing 72% of free fatty acids catalyzed by a novel Brønsted acidic ionic liquid 1-sulfobutyl-3-methylimidazolium hydrosulfate ([BHSO3MIM] [HSO4]) was systematically investigated. The optimum molar ratio of methanol to waste oils, catalyst amount, reaction temperature and reaction time were 8/1, 10% (based on the mass of waste oils), 140℃ and 6 h, respectively, under which the obtained yield of biodiesel reached 94.9%. Also,[BHSO3MIM] [HSO4] as a catalyst still retained around 97% of its original catalytic activity after successive re-use of 5 batches (6 h per batch), showing the excellent operational stability. Moreover, the acidic IL[BHSO3MIM] [HSO4] was able to efficiently catalyze conversions of waste oils with different amounts of FFAs (free fatty acids) into biodiesel, and showed tremendous application potential. Therefore, an efficient and environmentally friendly catalyst is provided for the synthesis of biodiesel from waste oils with high acid value.

Key words: 1-Sulfobutyl-3-methylimidazolium, hydrosulfate, Biodiesel, Waste oils with high acid value, Catalyst