期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 109, 期 19, 页码 9468-9475出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp0504874
关键词
-
The composition of methane hydrate, namely n(w) for CH(4)(.)n(w)H(2)O, was directly measured along the hydrate equilibrium boundary under conditions of excess methane gas. Pressure and temperature conditions ranged from 1.9 to 9.7 MPa and 263 to 285 K. Within experimental error, there is no change in hydrate composition with increasing pressure along the equilibrium boundary, but nw may show a slight systematic decrease away from this boundary. A hydrate stoichiometry of n(w) = 5.81-6.10 H2O describes the entire range of measured values, with an average composition of CH(4)(.)5.99(+/- 0.07)H2O along the equilibrium boundary. These results, consistent with previously measured values, are discussed with respect to the widely ranging values obtained by thermodynamic analysis. The relatively constant composition of methane hydrate over the geologically relevant pressure and temperature range investigated suggests that in situ methane hydrate compositions may be estimated with some confidence.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据