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Issue 23, 2012
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Quantum sieving: feasibility and challenges for the separation of hydrogen isotopes in nanoporous materials

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Abstract

Quantum effects on the molecular adsorption and migration in confined porous materials can not be ignored if the difference between the pore size and molecular hard core is no longer large compared to the de Broglie wavelength of gas molecules. Extensive studies of the quantum sieving have been focused on nanoporous materials due to their potential applications in separating hydrogen (H2) isotopes. This article reviews state-of-the-art research activities in the field of separation, discussing the feasibility of separating H2 isotopes by quantum sieving in nanoporous materials including zeolites, carbons and organic framework materials. The overall results indicate that an effective separation of H2 isotopes is possible via combining the equilibrium and kinetic selectivity of adsorption induced by a quantum sieving effect. A fundamental understanding of the factors that affect the quantum molecular sieving is discussed. We hope to outline a clear insight into the perspectives and challenges on this novel separation technique for H2 isotopes in the subsequent course of researches.

Graphical abstract: Quantum sieving: feasibility and challenges for the separation of hydrogen isotopes in nanoporous materials

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Article information


Submitted
12 Dec 2011
Accepted
10 Jun 2012
First published
13 Jun 2012

RSC Adv., 2012,2, 8579-8586
Article type
Review Article

Quantum sieving: feasibility and challenges for the separation of hydrogen isotopes in nanoporous materials

J. Cai, Y. Xing and X. Zhao, RSC Adv., 2012, 2, 8579
DOI: 10.1039/C2RA01284G

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