Gum formation tendencies of olefinic structures in gasoline and synergistic effect of sulphur compounds [electronic resource]
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| Online Access: |
Online Access (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Oak Ridge, Tenn. :
distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1995.
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| Subjects: |
| Abstract: | The high octane gasoline pool contains varying amounts of cracked naphthas as an important ingredient in formulating high octane lead free gasoline. The cracked naphthas are largely from Fluidized Catalytic Cracking (FCC) units and to lesser extend from thermal cracking units. While the role of olefinic unsaturation in gum formation during storage of gasoline has been extensively studied, there is little published work on contribution of individual olefin types in storage stability and gum formation tendency of gasoline containing these compound types. In the present work we report our results on storage stability and gum formation tendency of different olefin types present in cracked naphthas through model compound matrix. It is found that cyclic olefins and cyclic diolefins are the most prolific gum formers. We have also studied the role of sulfur compounds present in the gasolines on gum formation tendency of olefins. While thiols enhance gum formation from all olefinic types, sulfides and disulfides interact depending on the structure of olefins. These can have either an accelerating, or inhibiting effect on gum formation. |
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| Item Description: | Published through SciTech Connect. 04/01/1995. "conf-941022--vol.2" "DE95009411" 5. international conference on stability and handling of liquid fuels, Rotterdam (Netherlands), 3-7 Oct 1994. Nagpal, J.M.; Joshi, G.C.; Aswal, D.S. [Indian Institute of Petroleum, Dehradun (India)] USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States). Office of Technical Management. |
| Physical Description: | pp. 553-570 : digital, PDF file. |