Equilibrium Data of Methane, Carbon Dioxide, and Xenon Clathrate Hydrates below the Freezing Point of Water. Applications to Astrophysical Environments
Equilibrium Data of Methane, Carbon Dioxide, and Xenon Clathrate Hydrates below the Freezing Point of Water. Applications to Astrophysical Environments
复制标题
低于水冰点的甲烷、二氧化碳和氙笼形水合物的平衡数据。
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
B. Schmitt
中科院分区：
文献类型：
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作者：
N. Fray;U. Marboeuf;O. Brissaud;B. Schmitt
这项工作报告了水和以下每种客体系统中三相（冰+笼形水合物+蒸汽）平衡的新测量结果：氙从（167.20 ~ 246.16）K，二氧化碳从（172.28 ~ 182.15）K，甲烷从（145.75 ~ 195.74）K。所得结果与文献报道的相应数据进行了比较，并用于确定经验定律，使这些纯笼形物的平衡压力可以在与水的冰点以下的天体物理环境相关的任何温度下计算。这些关系可以用在天体物理模型中，比如那些致力于研究太阳星云的冷却和凝结的模型，或者那些致力于研究彗星核的物理演化和气体产生的模型。
This work reports new measurements of the three-phase (ice + clathrate hydrate + vapor) equilibrium in the systems of water and each of the following guest species: xenon from (167.20 to 246.16) K, carbon dioxide from (172.28 to 182.15) K, and methane from (145.75 to 195.74) K. The results are compared with the corresponding data reported in the literature and are used to determine empirical laws allowing the equilibrium pressure of these pure clathrates to be calculated at any temperature relevant to the astrophysical environments below the freezing point of water. These relations can be used in astrophysical models such as those devoted to the studies of the cooling and condensation of the solar nebula or to the ones of the physical evolution and gas production from cometary nuclei.