title: The carbon dioxide-water interface at conditions of gas hydrate formation.
abstract: The structure of the carbon dioxide-water interface was analyzed by X-ray diffraction and reflectivity at temperature and pressure conditions which allow the formation of gas hydrate. The water-gaseous CO2 and the water-liquid CO2 interface were examined. The two interfaces show a very different behavior with respect to the formation of gas hydrate. While the liquid-gas interface exhibits the formation of thin liquid CO2 layers on the water surface, the formation of small clusters of gas hydrate was observed at the liquid-liquid interface. The data obtained from both interfaces points to a gas hydrate formation process which may be explained by the so-called local structuring hypothesis.
authors.affiliation: Fakultät Physik/DELTA, Technische Universität Dortmund, Maria-Goeppert-Mayer-Strasse 2, 44221 Dortmund, Germany. Felix.Lehmkuehler@tu-dortmund.de
authors.forename: Felix
authors.initials: F
authors.lastname: Lehmkühler
authors.forename: Michael
authors.initials: M
authors.lastname: Paulus
authors.forename: Christian
authors.initials: C
authors.lastname: Sternemann
authors.forename: Daniela
authors.initials: D
authors.lastname: Lietz
authors.forename: Federica
authors.initials: F
authors.lastname: Venturini
authors.forename: Christian
authors.initials: C
authors.lastname: Gutt
authors.forename: Metin
authors.initials: M
authors.lastname: Tolan