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The adsorption of vapours onto a mercury surface.

Perry, GH 1972 , 'The adsorption of vapours onto a mercury surface.', Coursework Master thesis, University of Tasmania.

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The literature reports widely varying adsorption isotherms
for the adsorption of the members of the R-OH series on mercury,
where R = H,CH3,C2H5,C3H7. By following the variation in the height
of the sessile drop of mercury this research investigates the
adsorption of members of the series R-OD where R = D,CH3,C2H5,C3H 7 .
Deuteration of the -OH group produces the following effects:
1. All the surface pressure TT vs vapour pressure p isotherms
are (a) displaced-to lower surface pressures indicating a weaker
adsorption, (b) less convex or initially concave to the it axis
suggesting reduced adsorbent-adsorbate interaction relative to the
adsorbate-adsorbate molecule interaction for the R-OD series.
2. Produces films which are more condensed.
3. Lowers the heat of adsorption by 5 k cal mole -1or more.
L. Produces more stable reproducible films.
The area per molecule determined for the adsorbed monolayer
film agrees with the value calculated for a molecule lying flat on
the surface.
The adsorption behaviour of the R-OD series is dcminated by
the increased and stronger intermolecular hydrogen bonding in the
deuterated adsorbate as compared to the undeuterated species.

Item Type: Thesis - Coursework Master
Authors/Creators:Perry, GH
Keywords: Adsorption, Mercury
Copyright Holders: The Author
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Thesis (M.Sc.)--University of Tasmania, 1973. Bibliography: l. 236-242.

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