Characterization of crude oils by gel permeation chromatography.
Oelert-HH; Latham-DR; Haines-WE
Sep Sci Technol 1970 Oct; 5(5):657-668
The classical method of dividing crude oil into narrow molecular- weight cuts--distillation--is not practical in the high-boiling region. Thus, gel permeation chromatography was evaluated as a technique for characterizing the high-molecular-weight portion of crude oils. Crude oils, stripped to 180 deg. C, were separated in a dual-column gpc system. The fractions obtained provided information concerning the amounts of material with molecular weights between 400 and 3,000. Gross estimates were made of the proportion of ring and nonring carbons in these fractions. The latter estimates were obtained by relating molecular weights determined on the fractions to a calibration plot made up from data on model compounds.
Oils; Crude-oil; Chromatographic-analysis; Temperature-effects
OP; Journal Article
Separation Science and Technology