Obtaining biodiesel antioxidant additives by hydrothermal treatment of lignocellulosic bio-oil

被引：26
作者：
Gil-Lalaguna, N. [1 ]
Bautista, A. [1 ]
Gonzalo, A. [1 ]
Sanchez, J. L. [1 ]
Arauzo, J. [1 ]
机构：
[1] Univ Zaragoza, Aragon Inst Engn Res I3A, Thermochem Proc Grp, Zaragoza 50018, Spain
来源：
FUEL PROCESSING TECHNOLOGY | 2017年 / 166卷
关键词：
Biodiesel; Oxidation stability; Antioxidants; Lignocellulosic bio-oil; Hydrothermal treatment; OXIDATIVE STABILITY; SYNTHETIC ANTIOXIDANTS; PHENOLIC-COMPOUNDS; PYROLYSIS OILS; LIGNIN; CONVERSION; DIESEL; BLENDS;
D O I：
10.1016/j.fuproc.2017.05.020
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The potential use of bio-oil as a small-dosage additive for improving biodiesel oxidation stability has been investigated in this work. Lignocellulosic bio-oil was high-pressure processed under different mixtures of water and organic solvents in order to promote depolymerization of the high molecular lignin still present in bio-oil and increase the content of phenolics, whose antioxidant potential is known. In fact, the antioxidant potential of bio-oil was found to noticeably enhance after the hydrothermal treatment. While the addition of 2% of crude bio-oil improved biodiesel oxidation stability by 135%, the same amount of hydrotreated bio-oil (water, 300 degrees C, 8.5 MPa) led to an oxidation stability improvement of 400%, which was related to the increase in the concentration of catechol, as well as to the modification of antioxidant properties of the pyrolytic lignin fraction. (C) 2017 Elsevier B.V. All rights reserved.
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页码：1 / 7
页数：7
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