NITROGEN AND OXYGEN COMPOUND TYPES IN PETROLEUM - TOTAL ANALYSIS OF A 400-700 DEGREES F DISTILLATE FROM A CALIFORNIA CRUDE OIL

The oxygen and nitrogen compound types present in the 400-700 °F fraction of a California crude oil were analyzed by means of a standard separation scheme, high resolution mass spectrometry, and other techniques. All compound types present in other than trace amounts were accounted for; their molecular structures were determined and their concentrations were measured. Major compound types (>0.05% w) included the indoles, carbazoles, pyridines, quinolines, pyridones, quinolones, dibenzofuranes, dihydrobenzofuranes (coumarans), phenols, aliphatic esters and ketones, sulfoxides, and carboxylic acids. Lesser amounts of other compound types were also found. A new technique for removing sulfides from hetero-compound concentrates was developed: chromatography on mercuric-ion impregnated ion exchange resin. The present study confirms and extends a preceding analysis of the 700-850 °F fraction from this same crude oil. © 1969, American Chemical Society. All rights reserved.