摘要
在假设不同环数芳环上取代度或取代基数相等的基础上，由Ｈ－ＮＭＲ数据，推导出芳环分布计算式．采用模型混合物验证不同环数芳环质子类型谱带归属，然后估计出四种Ａｌｂｅｒｔａ沥青质芳环分布．结果表明，不同取代基数的假设，不会引起芳环分布估计的较大误差；Ａｌｂｅｒｔａ沥青质稠环芳烃含量不高，与传统对沥青质中稠环芳烃含量估计相差甚大．
Based on the assumption of equal degree of substitution or equal number ofsubstituents on aromatic ring,the aromatic ring distribution of heavy oils and bitumens is es-timated by NMR proton spectra on the aromatics with the different ring number.Band as-signments of aromatic protons are checked with model mixtures. In this way the aromaticring distributions of four Alberta asphaltenes are estimated. The results show that the effectof the assumption above-mentioned on the error of the ring distribution estimate is insignifi-cant,and the content of aromatic condensed rings of Alberta asphaltenes is not high,whichis different from the traditional estimates.
出处
《华东理工大学学报（自然科学版）》
EI
CAS
CSCD
1994年第4期501-506,共6页
Journal of East China University of Science and Technology
基金
国家自然科学基金
关键词
重油
沥青
芳香环分布
NMR
NMR spectroscopy
heavy oil
asphaltene
quantitative analysis
composi-tion
aromatic ring distribution
