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Upgrading bio-oil over different solid catalysts
Zhang, Qi; Chang, Jie; Wang, TieJun; Xu, Ying
2006-11-15
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume20Issue:6Pages:2717-2720
Corresponding Authorzhangqi@ms.giec.ac.cn
AbstractSolid acid 40SiO(2)/TiO(2)-SO(4)(2-) and solid base 30K(2)CO(3)/Al(2)O(3)-NaOH were prepared and compared with catalytic esterification activity according to the model reaction. Upgrading bio-oil by solid acid and solid base catalysts in the conditioned experiment was investigated, in which dynamic viscosities of bio-oil was lowered markedly, although 8 months of aging did not show much viscosity to improve its fluidity and enhance its stability positively. Even the dehydration by 3A molecular sieve still kept the fluidity well. The density of upgraded bio-oil was reduced from 1.24 to 0.96 kg/m(3), and the gross calorific value increased by 50.7 and 51.8%, respectively. The acidity of upgraded bio-oil was alleviated by the solid base catalyst but intensified by the solid acid catalyst for its strong acidification. The results of gas chromatography-mass spectrometry analysis showed that the ester reaction in the bio-oil was promoted by both solid acid and solid base catalysts and that the solid acid catalyst converted volatile and nonvolatile organic acids into esters and raised their amount by 20-fold. Besides the catalytic esterification, the solid acid catalyst carried out the carbonyl addition of alcohol to acetals. Some components of bio-oil undertook the isomerization over the solid base catalyst.
SubtypeArticle
Other AbstractSolid acid 40SiO(2)/TiO2-SO42- and solid base 30K(2)CO(3)/Al2O3-NaOH were prepared and compared with catalytic esterification activity according to the model reaction. Upgrading bio-oil by solid acid and solid base catalysts in the conditioned experiment was investigated, in which dynamic viscosities of bio-oil was lowered markedly, although 8 months of aging did not show much viscosity to improve its fluidity and enhance its stability positively. Even the dehydration by 3A molecular sieve still kept the fluidity well. The density of upgraded bio-oil was reduced from 1.24 to 0.96 kg/m(3), and the gross calorific value increased by 50.7 and 51.8%, respectively. The acidity of upgraded bio-oil was alleviated by the solid base catalyst but intensified by the solid acid catalyst for its strong acidification. The results of gas chromatography-mass spectrometry analysis showed that the ester reaction in the bio-oil was promoted by both solid acid and solid base catalysts and that the solid acid catalyst converted volatile and nonvolatile organic acids into esters and raised their amount by 20-fold. Besides the catalytic esterification, the solid acid catalyst carried out the carbonyl addition of alcohol to acetals. Some components of bio-oil undertook the isomerization over the solid base catalyst.
KeywordBiomass Pyrolysis Liquid Diesel Emulsions Pressure Engines
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ef060224o
WOS Subject ExtendedEnergy & Fuels ; Engineering
URL查看原文
WOS KeywordBIOMASS PYROLYSIS LIQUID ; DIESEL ; EMULSIONS ; PRESSURE ; ENGINES
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000242022300065
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/3486
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.Univ Sci & Technol China, Dept Thermanl Sci & Energy Engn, Hefei 230027, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Qi,Chang, Jie,Wang, TieJun,et al. Upgrading bio-oil over different solid catalysts[J]. ENERGY & FUELS,2006,20(6):2717-2720.
APA Zhang, Qi,Chang, Jie,Wang, TieJun,&Xu, Ying.(2006).Upgrading bio-oil over different solid catalysts.ENERGY & FUELS,20(6),2717-2720.
MLA Zhang, Qi,et al."Upgrading bio-oil over different solid catalysts".ENERGY & FUELS 20.6(2006):2717-2720.
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