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- W76156275 abstract "The characteristics of Cold Lake crude and residuum asphaltenes have been compared by a number of instrumental and physical techniques. They were essentially identical in quality and quantity except that the crude asphaltenes exhibited higher average molecular weights as well as molecular weight distributions peaking at higher molecular weights than did the residuum asphaltenes. The thermal history of these particular residuum asphaltenes is much more severe in terms of heating time than would ordinarily be the case for a refinery product from a pipestill since, in the present instance, a pot distillation was used. It therefore seems likely that refinery asphaltenes should be even less different from their respective crude asphaltenes than in this investigation, assuming that pipestill temperatures would be kept below the decomposition temperatures for the asphaltenes. Furthermore, any differences should be further diminished in the event that a crude which is less thermally sensitive than Cold Lake is involved. Since the Cold Lake crude used in this investigation has been exposed to the temperature of the pressurized steam used in the oil production, one cannot be certain that some thermal changes had not already occurred in the crude oil. To study this possibility the properties of coldmore » bailed (i.e., recovered without steam injection) Cold Lake crude asphaltenes are being investigated by many of these same techniques and will be described in a future report.« less" @default.
- W76156275 created "2016-06-24" @default.
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- W76156275 date "1980-01-01" @default.
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- W76156275 title "Effect of thermal processing on the properties of Cold Lake asphaltenes" @default.
- W76156275 hasPublicationYear "1980" @default.
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