【摘要】 通过大量的溶剂选择性实验,选取对大港减渣的16个超临界萃取物都具有优异溶解性能的环己烷为良性溶剂,并对每个萃取物分别进行FTIR分析,探索大港减渣所含基团的规律性。分析结果表明,不同大港减渣超临界萃取物的红外光谱图有一定的类似性,说明其含有的基团接近;大港减渣超临界萃取物含有10余种官能团,其中烷烃的含量最大;不同萃取物中同一种基团的含量不同。更多还原

【Abstract】 By selective experiments,cyclohexane was chosen as good solvent for dissolving 16 supercritical fluid extraction fractions(SFEF)from Dagang vacuum residue(DVR).Each SFEF was analyzed by FTIR to study the rules of groups contained in DVR.The analytical results showed that the FTIR spectrograms of these different fractions had certain similarity,so the groups contained in the fractions were more similar.More than 10 kinds of groups were included in these fractions,in which alkane was the most group.The contents of the same kind of group in these different fractions were dissimilarity.更多还原