ISSN:
1573-0662
Keywords:
soots
;
hydration
;
water adsorption
;
surface
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract Previous soot hydration studies have been extended to compare the water uptake properties of soots from selected fuels (JP-8 Jet fuel, kerosene, diesel, and metal containing and S-containing synthetics) prepared under varying conditions with corresponding n-hexane model soots. Adsorption and desorption isotherms have yielded such adsorption parameters as the surface coverages at the limit of chemisorption and at 83% relative humidity (RH). These values increase with soot surface oxidation over the range 35–85% RH, while hydration levels at lower RH down to 22% are a function of fuel composition and combustion conditions, thus determining the extent of water uptake at higher RH. Both S- and metal-containing soots exhibit higher levels of hydration than those of the base fuel soots, a result with its origin in availability of sulfate and metal centers at the surface.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1006221326060
Permalink