Nature

A Phase Diagram for the Barium Oxide–Carbon Dioxide System in the Eutectic Region

THE barium oxide–carbon, dioxide system has been examined at pressures of carbon dioxide up to 450 atm. 1 and is similar in many respects to that of calcium oxide and carbon dioxide 2. To bring out ...
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Phase diagram of CO2 fluid under temperature–pressure combinations, with the triple point and critical point marked. (IMAGE)

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Nature

A Phase Diagram for the Calcium Oxide–Carbon Dioxide System in the Eutectic Region

UNDER a pressure of carbon dioxide of 39.5 atmospheres, thermal dissociation of calcium carbonate takes place at 1,240°–1,242° C. 1,2 with the formation of a eutectic melt of lime and calcium ...