Liquid Phase Separation and Liquid—Vapor Equilibrium in the System Neon—Hydrogen

Liquid—vapor equilibrium phase compositions for the binary system neon—hydrogen have been determined at 10 temperatures in the range 24.59°—33.73°K and at pressures up to 200 psia. The system exhibits a phase separation in the liquid with an upper consolute temperature of 28.96°K, and an azeotrope in the region from about 12 to 20 mole % neon. The results are presented in both tabular and graphical form, and the general behavior of the system is discussed. A comparison with some earlier data is given. The experimental equipment, which includes a vapor-recirculating equilibrium system, a vapor-pressure-controlled liquid-neon bath, and a thermal-conductivity gas analyzer, is briefly described.

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