Preferential Adsorption from Binary Mixtures on Graphite: The n-Decane−n-Heptan-1-ol System

Alba, María D. and Castro, Miguel A. and Clarke, Stuart M. and Medina, Santiago and Messe, Loic and Millán, Carmen and Orta, M. Mar and Perdigón, Ana C. (2009) Preferential Adsorption from Binary Mixtures on Graphite: The n-Decane−n-Heptan-1-ol System. The Journal of Physical Chemistry C, 113 (8). pp. 3176-3180. DOI 10.1021/jp8072014

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Official URL: http://dx.doi.org/10.1021/jp8072014

Abstract

The competitive adsorption of n-decane and n-heptan-1-ol adsorbed from the binary liquid mixture onto graphite has been studied using differential scanning calorimetry, incoherent quasielastic neutron scattering, and 1H and 2H nuclear magnetic resonance. A solid monolayer is identified at all bulk solution compositions with a melting temperature that varies with bulk composition in a manner resembling the bulk behavior. Incoherent elastic neutron scattering, IQNS, and nuclear magnetic resonance, NMR, data indicate that decane is preferentially adsorbed onto the surface over most of the composition range, heptanol being the principal surface component only at very high heptanol concentrations. NMR is proved, for the first time, to be an efficient tool to provide independent information on each component of the system.

Item Type: Article
Uncontrolled Keywords: 09AREP; BPI
Subjects: 99 - Other
Divisions: 99 - Other
Journal or Publication Title: The Journal of Physical Chemistry C
Volume: 113
Page Range: pp. 3176-3180
Identification Number: 10.1021/jp8072014
Depositing User: Sarah Humbert
Date Deposited: 22 Jul 2010 16:36
Last Modified: 23 Jul 2013 09:57
URI: http://eprints.esc.cam.ac.uk/id/eprint/1511

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