Chemical Affinity of Ag-Exchanged Zeolites for Efficient Hydrogen Isotope Separation.

ABSTRACT: We report an ion-exchanged zeolite as an excellent candidate for large-scale application in hydrogen isotope separation. Ag(I)-exchanged zeolite Y has been synthesized through a standard ion-exchange procedure. The D₂/H₂ separation performance has been systematically investigated via thermal desorption spectroscopy (TDS). Undercoordinated Ag⁺ in zeolite AgY acts as a strong adsorption site and adorbs preferentially the heavier isotopologue even above liquid nitrogen temperature. The highest D₂/H₂ selectivity of 10 is found at an exposure temperature of 90 K. Furthermore, the high Al content of the zeolite structure leads to a high density of Ag sites, resulting in a high gas uptake. In the framework, approximately one-third of the tota

SUBMITTER: Zhang L 

PROVIDER: S-EPMC9241142 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature