摘要
本文以核磁共振氢谱为基础,结合红外光谱及元素组成、平均分子量等数据,用改进的Brown-Ladner法计算了我国若干种主要原油的减压渣油及其组分的平均结构参数。结果表明:这些参数能定量地表征各种减压渣油在平均结构上的差别。就其组分而言,从饱和分、芳香分、胶质到沥青质,其芳碳率f_A依次增大,烷基碳率f_P依次减小,分子量依次增大,而单元结构重则变化不大,大体都在一千左右。
By means of the modified Brown-Ladner's method, the average structural parameters of the vacuum residues of several Chinese crude oils were calculated based on proton magnetic resonance spectroscopy combined with infrared spectroscopy, average molecular weight determination and elementary analysis. The results show that the parameters obtained are capable to reflect the average structure of the vacuum residues. In regard to the structural parameters of the fractions of residues, the aromaticity f_A increases, the fraction of paraffinic carbon f_p decreases, and the average molecular weight increases in the order or saturate, aromatic, resin and asphaltene accordingly, but the unit structure weights are very similar (～1000) for all fractions.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
1991年第4期1-11,共11页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家自然科学基金资助项目
