The Carbon Dioxide-Water Interface at Conditions of Gas Hydrate Formation

被引：63

作者：

Lehmkuehler, Felix ^{[1
]}

Paulus, Michael ^{[1
]}

Sternemann, Christian ^{[1
]}

Lietz, Daniela ^{[1
]}

Venturini, Federica ^{[2
]}

Gutt, Christian ^{[3
]}

Tolan, Metin ^{[1
]}

机构：

[1] Tech Univ Dortmund, Fak Phys, DELTA, D-44221 Dortmund, Germany

[2] ESRF, F-38043 Grenoble, France

[3] DESY, HAYSLAB, D-22607 Hamburg, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 02期

关键词：

X-RAY REFLECTIVITY; MOLECULAR-DYNAMICS; NUCLEATION MECHANISMS; CLATHRATE-HYDRATE; LIQUID WATER; CO2; CLUSTERS;

D O I：

10.1021/ja806211r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 CO(2) and the water-liquid CO(2) 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 CO(2) 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.

引用

页码：585 / 589

页数：5

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