文献类型：期刊文献

英文题名：Study on the structure of heavy oils

作者：Shui, HF; Shen, BX; Gao, JS

机构：[1]E CHINA UNIV SCI & TECHNOL,SHANGHAI 200237,PEOPLES R CHINA

年份：1997

卷号：15

期号：7-8

起止页码：595

外文期刊名：PETROLEUM SCIENCE AND TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1997XR75600002)】；

语种：英文

摘要：The structural parameters of six heavy oils have been calculated with n-d-M, Brown-Ladner and (HNMR)-H-1/IR method in this paper. The aliphatic H/C atomic ratio Hs/CS i.e. x values were obtained from IR spectra combining wish (HNMR)-H-1 spectra. The comparison of structural parameters calculated by (HNMR)-H-1/IR, Brown Ladner and n-d-M methods were carried out for the six heavy oils. It is proposed that the (HNMR)-H-1/IR method gives more precise average molecular parameters than the Brown-Ladner method. N-d-M method can gives right molecular structural parameters for some heavy oils with lower molecular weight, but the information of molecular structure obtained by it is limited.