摘要
测定生物质裂解油和催化裂解精制油沥青质的平均分子质量和元素含量,计算两种沥青质基本结构单元的平均分子式。通过1H-NMR,13C-NMR波谱计算得到一系列平均结构参数,建立生物质裂解油和催化裂解精制油沥青质的分子模型,并用傅里叶变换红外光谱进行验证。分析结果表明:精制后的催化裂解精制油的沥青质含量减少,分子量降低,含氧官能团明显少于生物质裂解油沥青质,而芳环数目增加。由此可见,经过精制反应后的催化裂解精制油沥青质的分子量变小,氧含量降低,芳香度增加,从而会影响生物质油的品质。
The average molecular weight and element content of asphahene 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 asphahene 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.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第2期243-248,共6页
Acta Energiae Solaris Sinica
基金
国家重点基础研究发展(973)计划(2007CB210206)
国家自然科学基金(21006028)
关键词
生物质裂解油
催化裂解
精制油
沥青质
平均结构参数
分子模型
pyrolysis bio-oil
catalytic pyrolysis
upgrading bio-oil
asphaltene
average structure parameter
molecular structure model
