Acidity of Biomass Fast Pyrolysis Bio-oils

被引：199
|
作者：
Oasmaa, Anja [1 ]
Elliott, Douglas C. [2 ]
Korhonen, Jaana [1 ]
机构：
[1] VTT Tech Res Ctr Finland, FI-02044 Espoo, Vtt, Finland
[2] Pacific NW Natl Lab, Richland, WA 99352 USA
来源：
ENERGY & FUELS | 2010年 / 24卷 / 12期
关键词：
FORESTRY RESIDUE; LIQUIDS; STABILIZATION;
D O I：
10.1021/ef100935r
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The use of the total acid number (TAN) method for measuring the acidity of biomass fast pyrolysis bio-oil was evaluated. Suggestions for carrying out the analysis have been made. The TAN method by American Society for Testing and Materials (ASTM) D664 or D3339 can be used for measuring the acidity of fast pyrolysis bio-oils and their hydrotreating products. The main difference between the methods is that ASTM D664 is specified for higher TAN values than ASTM D3.339. Special focus should be placed on the interpretation of the TAN curves because they differ significantly from those of mineral oils. The curve for bio-oils is so gentle that the automatic detection may not observe the end point properly, and derivatization should be used. The acidity of fast pyrolysis bio-oils is mainly derived (60-70%) from volatile acids. Other groups of compounds in fast pyrolysis bio-oils that influence acidity include phenolics, fatty and resin acids, and hydroxy acids.
引用
收藏
页码：6548 / 6554
页数：7
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