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Abstract

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
Copyright Information:	Copyright the Author - The University is continuing to endeavour to trace the copyright owner(s) and in the meantime this item has been reproduced here in good faith. We would be pleased to hear from copyright owner(s).
Additional Information:	Thesis (M.Sc.)--University of Tasmania, 1973. Bibliography: l. 236-242.
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