Enhanced quantum sieving of hydrogen isotopes via molecular rearrangement of the adsorbed phase in chabazite | Zendy

Bastien Radola | Zendy; Igor Bezverkhyy | Zendy; Jean-Marc Simon | Zendy; J.M. Salazar | Zendy; Mathieu Macaud | Zendy; JeanPierre Bellat | Zendy

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Enhanced quantum sieving of hydrogen isotopes via molecular rearrangement of the adsorbed phase in chabazite

Author(s) -

Bastien Radola,

Igor Bezverkhyy,

Jean-Marc Simon,

J.M. Salazar,

Mathieu Macaud,

JeanPierre Bellat

Publication year - 2020

Publication title -

chemical communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.837

H-Index - 333

eISSN - 1364-548X

pISSN - 1359-7345

DOI - 10.1039/d0cc02060e

Subject(s) - chabazite , adsorption , chemistry , selectivity , phase (matter) , hydrogen , isotope , zeolite , inorganic chemistry , crystallography , organic chemistry , physics , quantum mechanics , catalysis

Coadsorption experiments reveal an unexpected increase of the D2/H2 selectivity with loading in pure silica chabazite at 47 K. This effect is correlated with the appearance of a step in the adsorption isotherms of H2 and D2. Grand canonical Monte Carlo simulations show that this phenomenon is related to a molecular rearrangement of the adsorbed phase induced by its strong confinement. In the case of a H2 and D2 mixture, this rearrangement favors the adsorption of D2 having a smaller size due to quantum effects.

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