| Abstract
| - Studies were conducted to investigate the use of urea treatment for improving the low-temperature properties of jet fuel. In particular, we utilized differential scanning calorimetry(DSC), cold-stage microscopy, and ASTM freeze, cloud, and pour-point testing to characterizethe changes in the fuel that occur upon urea treatment. We also used gas chromatography (GC)to study both the qualitative and quantitative changes that occur in the chemical constituents ofthe fuel. These studies show that urea treatment in the presence of an activator species, such asmethanol, is quite selective and effective at removing long chain n-alkanes. The resulting fuelshows a substantial decrease in crystal formation observed via DSC and cold-stage microscopy.The fuel also displays a significant reduction in the measured pour and cloud points. Some ofthe practical issues in using urea treatment for jet fuel are also discussed.
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