Accession Number : AD0684763

Title :   DIFFUSION-LIMITED LIQUID-PHASE OXIDATION OF n-DODECANE AT 200C.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Boss,B. D. ; Hazlett,R. N.

Report Date : 31 DEC 1968

Pagination or Media Count : 21

Abstract : Oxidation of n-dodecane at 200C by air at 1 atm was carried out for 5 hr in a borosilicate glass reaction chamber equipped with a gas bubbler. The rate of reaction was limited by the rate of oxygen diffusion from the gas phase due to the rapid consumption of oxygen absorbed into the liquid phase. The reaction products were analyzed in aliquots taken periodically from the reaction chamber. Chemical analyses, gas-liquid partition chromatography (GLC), tandem GLC-mass spectroscopy, and infrared and ultraviolet absorption were used to identify products accounting for 98% of the oxygen reacted. The isomer distribution of the dodecanols and dodecanones formed, as well as the distribution of carboxylic acids, was determined. Three classes of intramolecular reaction products--cyclic ethers, cyclic hydrocarbons, and lactones--were detected. Many volatile products were detected. A filterable precipitate obtained after 10 hr of oxidation was studied using infrared attenuated total reflectance techniques. A reaction mechanism is proposed based on current knowledge of other systems, the products identified, and the stoichiometry of the reaction. (Author)

Descriptors :   (*HYDROCARBONS, *OXIDATION), (*JET ENGINE FUELS, OXIDATION), REACTION KINETICS, GAS CHROMATOGRAPHY, FREE RADICALS, HYDROPEROXIDES, MASS SPECTROSCOPY, THERMAL STABILITY

Subject Categories : Organic Chemistry
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE