Quantum Sieving in Carbon Nanotubes and Zeolites

Qinyu Wang; Sivakumar R. Challa; David S. Sholl; J. Karl Johnson

doi:10.1103/PhysRevLett.82.956

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Quantum Sieving in Carbon Nanotubes and Zeolites

Qinyu Wang, Sivakumar R. Challa, David S. Sholl, and J. Karl Johnson

Phys. Rev. Lett. 82, 956 – Published 1 February 1999

Abstract

Fluids adsorbed in microporous materials can exhibit quantum sieving, where heavy isotopes are preferentially adsorbed over light isotopes. We present the first detailed predictions of quantum sieving based on realistic models of microporous materials. Carbon nanotubes, and the interstices of nanotube bundles, can act as highly effective quantum sieves for hydrogen isotopes. Quantum sieving of He and Ne in the zeolite ${AlPO}_{4} - 22$ is also discussed.

Received 30 September 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.956

Authors & Affiliations

Qinyu Wang¹, Sivakumar R. Challa¹, David S. Sholl², and J. Karl Johnson^1,*

¹Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261
²Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213

^*Author to whom correspondence should be addressed. Email: karlj+@pitt.edu

A Hydrogen Filter from Nanotubes

Dana Mackenzie

Phys. Rev. Focus 3, 6 (1999)

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Issue

Vol. 82, Iss. 5 — 1 February 1999

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