Fundamentals of fuel stability. Technical Report No. 6
Gasoline samples were aged by irradiation with ultraviolet light. Both heptane-soluble and heptane-insoluble gums were formed at constant rates during UV irradiation. The samples were analyzed before and after aging to determine the changes in aromatics content and in the concentration of sulfur and nitrogen compounds. The types of aromatics that reacted to form gum, in decreasing order of reactivity, were: alkyl benzenes, tetralins and indans, and naphthalenes. In the study of sulfur compounds, it was found that elemental sulfur, hydrogen sulfide, mercaptans, sulfides and disulfides reacted in gasoline aged by UV irradiation. Other types of sulfur compounds did not react. Sulfur compounds were not essential for gum formation. Nitrogen compounds were also reactive in gum formation. The main nitrogen compounds involved in gum formation were the basic compounds, such as pyridines, quinolines, anilines, and amines. Nitrogen compounds were not essential for gum formation.
- OSTI ID:
- 6413829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
023000 -- Petroleum-- Properties & Composition
024000* -- Petroleum-- Storage-- (-1989)
AGING
AMINES
ANILINE
AROMATICS
AZAARENES
AZINES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CONDENSED AROMATICS
DISULFIDES
ELECTROMAGNETIC RADIATION
ELEMENTS
FUELS
GASOLINE
GUMS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INDAN
IRRADIATION
LIQUID FUELS
NAPHTHALENE
NITROGEN COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM PRODUCTS
PYRIDINES
QUANTITY RATIO
QUINOLINES
RADIATIONS
STABILITY
STORAGE
SULFIDES
SULFUR
SULFUR COMPOUNDS
SYNTHESIS
TETRALIN
THIOLS
ULTRAVIOLET RADIATION