Gum and deposit formation from jet-turbine and diesel fuels at 100 C

Technical Report · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6533464

Mayo, F R; Lan, B Y

Rates of oxidation and gum formation for six hydrocarbons, three jet-turbine fuels and three diesel fuels have been measured at 100 C in the presence of t-Bu2O2 tert-butyl-peroxide as initiator. Four of six fuels oxidize faster at 100 C than in previous work at 130 C with initiator. Four any single substrate, the amount of gum produced for the oxygen absorbed is similar at 100 and 130 C even with large changes in rates and t-Bu2O2 concentrations. Thus, one mechanism of gum formation is intimately associated with oxidation. The effects of t-Bu2O2 concentration on the rates of oxygen absorption and gum formation show that gum formation is associated with chain termination by two peroxy radicals. In general, the pure hydrocarbons have long kinetic chains and give good yields of hydroperoxides. The fuels give short kinetic chains and produce little hydroperoxide but but much more gum formation is the coupling of substrates by peroxides in the absence of oxygen. The mechanism, condensation of oxidation products from alkylnaphthalenes, is also proposed.

• Research Organization: SRI International, Menlo Park, CA (USA)
• OSTI ID: 6533464
• Report Number(s): AD-A-178828/0/XAB
• Resource Relation: Other Information: Pub. in Industrial and Engineering Chemistry Research, Vol. 26, No. 2, 215-220(1987)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DIESEL FUELS
GUMS
OXIDATION
HYDROCARBONS
JET ENGINE FUELS
ABSORPTION
AVIATION FUELS
DEPOSITS
FUELS
KINETICS
OXYGEN
PEROXIDES
CHEMICAL REACTIONS
ELEMENTS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
020500* - Petroleum- Products & By-Products
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry