CO2 is not only an abundant natural carbon resource, but also green gas. Its effective utilization is an important object for environmental protection and material resource. The excellent properties of supercritical CO_2 are suitable for supercritical fluid extraction and supercritical fluid reaction. The study on high-pressure phase behavior of binary systems containing SCCO_2 is necessary for its applications. So a series of systems containing CO_2 have been experimentally investigated and calculated.
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