Portal de Periódicos da CAPES

The adsorption of nitrogen, hydrogen and their mixtures on silica gel

1952; Royal Netherlands Chemical Society; Volume: 71; Issue: 7 Linguagem: Inglês

10.1002/recl.19520710710

1878-7096

M. van der Waarden, F. Scheffer,

Gas Dynamics and Kinetic Theory

Abstract Adsorption isotherms of hydrogen and nitrogen on silica gel were determined up to equilibrium pressures of approx. 800 mm mercury and at temperatures between +300 and —195°C. The adsorption of nitrogen‐hydrogen mitxures at a total equilibrium pressure of 760 mm mercury was determined at 0, —78 and —183°C. At 0 and —78°C the adsorption of hydrogen is increased by the presence of nitrogen and the adsorption of nitrogen is reduced by the presence of hydrogen; at —183°C the adsorption of hydrogen is strongly reduced by the presence of nitrogen and the adsorption of nitrogen is hardly affected by the presence of hydrogen. The adsorption at temperatures above the critical temperature of the individual gases, as well as that of their mixtures is qualitatively in agreement with the conception that the adsorbed phase is a gas phase condensed under the influence of the adsorbent.