Upgrading of Bio-oil by Catalytic Esterification

被引：1
|
作者：
Cheng Yanyan [1 ]
Sui Guanghui [1 ]
Chen Zhimin [1 ]
Wei Qingling [1 ]
Duan Yajun [1 ]
Wang Xiaofeng [1 ]
Yang Xiaomin [1 ]
Wang Zichen [1 ]
机构：
[1] Jilin Univ, Coll Chem, Changchun 130012, Jilin, Peoples R China
来源：
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2018年 / 39卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Upgrading of bio-oil; Ethanol-bio-oil; Neutralizer; Catalytic esterification; BIOMASS FAST PYROLYSIS; RICE HUSK; FRACTION;
D O I：
10.7503/cjcu20180404
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Bio-oil pyrolyzed from rice husk was separated into light-oil and heavy-oil by vacuum distillation. The heavy-oil was upgraded by catalytic esterification with sulfuric acid to prepare ethanol-bio-oil. Then the sulfuric acid catalyst was separated from ethanol-bio-oil using neutralizer. Effects of the catalytic esterification and neutralization on the pH value of ethanol-bio-oil were investigated. The component and molecular weight of raw bio-oil and the ethanol-bio-oil were analyzed by GC/MS and GPC. The results show that the pH value of ethanol-bio-oil can reach 5.86 under the following optimized reaction conditions, 120 degrees C , 3 h , sulfuric acid as catalyst, ethanol as solvent. The influence sequence of neutralizers on the pH value of ethanol-bio-oil is as following , BaO approximate to BaCO3 <CaCO3 <nano-CaO. In addition, after the progress of catalytie esterifieation, not only did esters increase by 26.1%, acids and ethonal-bio-oil decrease by 90%.
引用
收藏
页码：2746 / 2751
页数：6
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