Ghorai, Pradip Kr. ; Yashonath, Subramanian (2004) Diffusion anomaly at low temperatures in confined systems from the rare events method Journal of Physical Chemistry B, 108 (22). pp. 7098-7101. ISSN 1520-6106
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp037777%2B
Related URL: http://dx.doi.org/10.1021/jp037777+
Abstract
Size dependence of self-diffusivity of monatomic spherical sorbates within zeolite NaY has been investigated at low temperatures. Self-diffusivity, D, exhibits a pronounced maximum when the size of the diffusant is comparable to the void size. The value of D in the anomalous regime is 17 orders of magnitude higher as compared to the linear regime. The implication of these results on separation of mixtures is discussed. Frequency of the recrossing events across the barrier to diffusion and its dependence on the size as revealed by the transmission coefficient are discussed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 55783 |
| Deposited On: | 19 Aug 2011 05:53 |
| Last Modified: | 19 Aug 2011 05:53 |
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