Journal
FUEL
Volume 85, Issue 12-13, Pages 1842-1850Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2006.02.007
Keywords
petroleum resins; fractionation methods; liquid chromatography
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Native petroleum resins from two Mexican crude oils have been fractionated using reversed phase chromatography (RPC) and adsorption chromatography normal phase chromatography (NPC). RPC with acetone/DCM and NPC with cyclohexane/DCM/acetone produced different resin fractions that were characterized by Fourier transform infrared (FT-IR) spectroscopy and gel permeation chromatography (GPC). Observable reduction in polydispersity was achieved for the resins with both systems. Chromatographic fractionation permits a more complete inventory of structural features in this kind of complex polar-hydrocarbon mixtures. (c) 2006 Elsevier Ltd. All rights reserved.
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