Artículo
Application of the solid state NMR to the study of the alcohol/alkane mixtures adsorption onto graphite
Autor/es | Alba Carranza, María Dolores
Castro Arroyo, Miguel Ángel Clarke, Stuart M. Medina, Santiago Messe, Loic Millán, Carmen |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2011 |
Fecha de depósito | 2019-02-14 |
Publicado en |
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Resumen | The mixing of molecules adsorbed from solution to different interfaces has both industrial and academic relevance and the mixing behaviour at the interface is a key to understanding for example, that the surface tension ... The mixing of molecules adsorbed from solution to different interfaces has both industrial and academic relevance and the mixing behaviour at the interface is a key to understanding for example, that the surface tension of a mixture of two surfactants is lower than either of the two pure materials and many other effects. In this paper, we report, for the first time, the application of Solid State NMR to the study of alkane/alcohol mixtures, in a range of relative size ratio between 0 and 0.35, adsorbed onto graphite at high, multilayer coverage. Moreover, this paper evaluated, for the first time, the utility of the combined used of 1H and 2H NMR for: (i) determining the surface composition and (ii) making a theoretical approach to the sorption isotherm. A variety of preferential adsorption behaviour is reported. Preferential adsorption of the longer molecule (decane vs. heptanol) from a mixture has been observed. However, if both components are of similar length, the alcohol is preferentially adsorbed (heptanol vs. octane and octanol vs. octane). Finally, a linear relation between the relative size ratio and the amount of alcohol at monolayer coverage is observed. |
Agencias financiadoras | Ministerio de Medio Ambiente y Medio Rural y Marino. España Ministerio de Ciencia e Innovación (MICIN). España |
Identificador del proyecto | 300/PC08/3-01.1
CTQ2010-14874 |
Cita | Alba Carranza, M.D., Castro Arroyo, M.Á., Clarke, S.M., Medina, S., Messe, L. y Millán, C. (2011). Application of the solid state NMR to the study of the alcohol/alkane mixtures adsorption onto graphite. Solid State Nuclear Magnetic Resonance, 40, 138-143. |
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