Reaction of Bulk Hydrogen in Pd(111) with Adsorbed CN: A Possible Controlled Barrier for Hydrogen Diffusion

摘要

The reactivity of bulk hydrogen in Pd(111) with chemisorbed CN has been studied by temperature programmed desorption. It has been found that adsorbed CN effectively reacts above 420 K with surface H produced by diffusion from the bulk. This reaction completely suppresses C2N2(g) formation and H2(g) formation, producing HCN(g). Thus, CN(a) is an effective barrier material for bulk H Diffusion in Pd. Palladium, Hydrogen, Diffusion, Barrier, Cyanide, Reprints. (jes)