Publications by authors named "Melanie Petitjean"
The adsorption of hydroxyacetone molecules at the surface of ice is investigated by means of flow-tube reactor measurements in the temperature range: 213-253 K. The number of molecules adsorbed per surface unit is conventionally plotted as a function of the absolute gas concentration of hydroxyacetone and is compared to that previously obtained for acetone and ethanol. The enthalpy of adsorption and the monolayer capacity at the ice surface are determined.
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- The adsorption study of benzaldehyde on ice used both experiments and Monte Carlo simulations, showing a strong correlation between the two with regards to adsorption isotherms.
- The enthalpy of adsorption for benzaldehyde on ice was calculated at about -61.4 kJ/mol experimentally and -59.4 kJ/mol through simulations, indicating a strong affinity of benzaldehyde for ice compared to smaller aldehydes.
- At low coverage, benzaldehyde molecules lie parallel to the ice surface, but as coverage increases, some adopt perpendicular orientations, leading to interactions between the molecules and the ice surface as well as among the molecules themselves.