Negative chromatography of hydrogen and helium on zeolite CaA

Abstract

Retention times for hydrogen and helium in chromatography column parked by zeolite CaA have
been measured at 298К. Values of partion coefficient and free energy have been estimated from negative
Henry constants for helium and hydrogen adsorption on zeolite CaA.
The role of a gas-carrier nature in the light gases chromatography has been discussed. Methods
of dead volume estimation and advantages on negative chromatography in analytic chemistry gases and
vapors have been observed.