Upgrading of bio-oil over aluminum silicate in supercritical ethanol

被引：82

作者：

Peng, Jun ^{[1
]}

Chen, Ping ^{[1
]}

Lou, Hui ^{[1
]}

Zheng, Xiaoming ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Chem, Inst Catalysis, Hangzhou 310028, Zhejiang, Peoples R China

来源：

ENERGY & FUELS | 2008年 / 22卷 / 05期

关键词：

D O I：

10.1021/ef8001789

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 crude bio-oil from fast pyrolysis of rice husk was upgraded in supercritical ethanol using aluminum silicate as a catalyst. The results showed that the supercritical upgrading process performed effectively and the components of upgraded bio-oil were optimized greatly. Acidic aluminum silicate facilitates esterification in supercritical ethanol to convert most acids contained in crude bio-oil into various kinds of esters. The amount of phenols that exist extensively in crude bio-oil decreased during the supercritical upgrading process. Aldehydes, such as furfural and vanillin, which are typically present in crude bio-oil, were removed during the supercritical upgrading process and not detected in upgraded bio-oil. The residue of distillated upgraded bio-oil decreased evidently compared to that of distillated crude bio-oil. The density and kinematical viscosity of upgraded bio-oil decreased compared to that of crude bio-oil. The pH value and heating value of upgraded bio-oil increased compared to that of crude bio-oil. The changes of these properties showed that the quality of upgraded bio-oil was improved.

引用

页码：3489 / 3492

页数：4

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