Effect of liquefaction temperature on hydroxyl groups of bio-oil from loblolly pine (Pinus taeda)

被引：12

作者：

Celikbag, Yusuf ^{[1
,2
]}

Via, Brian K. ^{[1
,2
,3
]}

Adhikari, Sushil ^{[2
,3
]}

Wu, Yonnie ^{[4
]}

机构：

[1] Auburn Univ, Forest Prod Dev Ctr, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA

[2] Auburn Univ, Ctr Bioenergy & Bioprod, Auburn, AL 36849 USA

[3] Auburn Univ, Dept Biosyst Engn, Auburn, AL 36849 USA

[4] Auburn Univ, Dept Chem & Biochem, Auburn, AL 36849 USA

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 169卷

关键词：

Biomass liquefaction; Bio-oil; Bio-based polyol; Hydroxyl number; BIOMASS; POLYOLS; PYROLYSIS; CATALYSTS; PRODUCTS; SOLVENTS;

D O I：

10.1016/j.biortech.2014.07.075

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Loblolly pine was liquefied with ethylene glycol at 100, 150, 200 and 250 degrees C in order to analyze the effect of liquefaction temperature on hydroxyl groups of bio-oil, and to determine the source and variation of hydroxyl groups. The optimum temperature was found to be 150-200 degrees C. Hydroxyl number (OHN) of the bio-oil was ranged from 632 to 1430 mg KOH/g. GC-MS analysis showed that 70-90% of OHN was generated from unreacted EG. P-31 NMR analysis showed that the majority of hydroxyl groups were aliphatic, and none of the bio-oil exhibited any detectable hydroxyl groups from phenolic sources. Finally, it was found that all bio-oils were stable in terms of OHN for 2 months when stored at -10 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：808 / 811

页数：4

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