Phase-Behavior of CO2 Hydrate-Liquid CO2-H2O System at High Pressure.

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  • ＣＯ２Ｈｙｄｒａｔｅ‐液体ＣＯ２‐Ｈ２Ｏ混合系の高圧相挙動
  • CO2 Hydrate エキタイ CO2 H2O コンゴウケイ ノ コウアツソウ

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Abstract

High-pressure phase-behavior of CO2 hydrate-liquid CO2-H2O mixture was investigated in the temperature range from 283.3 to 288.5 K and over a pressure range of 8 to 82 MPa. The observed phase boundary corresponds to the three-phase coexisting line with a nonvariant point of CO2 hydrate-liquid CO2-gaseous CO2-H2O quadruple point. Phase density-inversion between CO2 hydrate, liquid CO2 and H2O phases was also observed.

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