文献类型：期刊文献

英文题名：Study on catalytic pyrolysis mechanism of bio-oil(II) - Molecular structure model of asphaltene in bio-oil

作者：Rong, Xin[1]; Huang, Qingfa[1]; Xie, Dan[1]; Xu, Qingli[1]; Wang, Fu[1]; Li, Hongyu[1]; Yan, Yongjie[1]

机构：[1] Research Center for Biomass Energy, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：33

期号：2

起止页码：243

外文期刊名：Taiyangneng Xuebao/Acta Energiae Solaris Sinica

收录：EI(收录号：20121314900111)

语种：英文

外文关键词：Molecular structure - Fourier series - Molecular oxygen - Asphaltenes - Pyrolysis - Fourier transform infrared spectroscopy - Biofuels

摘要：The average molecular weight and element content of asphaltene in the pyrolysis bio-oil and the upgrading bio-oil were measured to calculate the average molecular formula of the basic structural unit. A series of average structural parameters were calculated with the help of 1H-NMR, 13C-NMR and structural models were established by analyzing asphaltene in the pyrolysis bio-oil and the upgrading bio-oil, and verified by Fourier transform infrared spectroscopy(FT-IR). The results show that there is a reduction of the molecular weight of asphaltene after being refined, also the oxygen-containing functional groups is less than that of pyrolysis bio-oil apparently; while a increase in the number of aromatic ring. Thus, the upgrading bio-oil has a smaller molecular weight, lower oxygen content and higher aromaticity, which promotes the quality of the pyrolysis bio-oil eventually.