文献类型：期刊文献

英文题名：Molecular Structure Models of Asphaltene in Crude and Upgraded Bio-Oil

作者：Xu, Qingli[1];Zhang, Zhikai[1];Zhang, Suping[1];Wang, Fu[1];Yan, Yongjie[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Biomass Energy, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：37

期号：7

起止页码：1198

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;EI(收录号：20142617878502);WOS:【SCI-EXPANDED(收录号:WOS:000340165900013)】；

基金：This project was financially supported by the National Natural Science Foundation of China (No. 21006028 and No. 21376084) and the Jiangsu Key Laboratory for Biomass Energy and Material Opening Foundation.

语种：英文

外文关键词：Asphaltene; Catalytic hydrogenation; Crude bio-oil; Upgraded bio-oil

摘要：The average molecular formula of asphaltene was calculated from the main functional groups of asphaltene determined by Fourier transform infrared spectroscopy, the average molecular weight found by gel filtration chromatography, and values of ultimate analysis. A series of average structure parameters were determined by H-1 NMR and C-13 NMR spectrum integrals, followed by establishing the structure models of asphaltene according to the Brown-Ladner method. Reduction of molecular weight of asphaltene was observed after bio-oil upgrading, and the oxygen-containing functional groups were apparently less than that of crude bio-oil while the number of aromatic rings was increased. The upgraded bio-oil had a lower molecular weight, lower oxygen content, and higher aromaticity compared with crude bio-oil.