Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-25T17:29:24.807Z Has data issue: false hasContentIssue false
  • English
  • Français

Robustness of Methane Diffusion in Geometrically Restricted Molecular Sieve Pores

Published online by Cambridge University Press:  15 February 2011

Sriram S. Nivarthi ,
H. Ted Davis  and
Alon V. McCormick
Sriram S. Nivarthi
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota 421 Washington Avenue S.E., Minneapolis, MN 55455
H. Ted Davis
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota 421 Washington Avenue S.E., Minneapolis, MN 55455
Alon V. McCormick
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota 421 Washington Avenue S.E., Minneapolis, MN 55455
Get access

Abstract

NMR measurements of sorbate mobility in zeolites are especially attractive because of their capability of measuring multicomponent and anisotropic self-diffusion. We have recently reported the application of the pulsed field gradient NMR technique using very large zeolite crystals to study how easily methane can diffuse when we attempt to slow its migration by crowding the pore space. Here we analyze the implications of these PFG NMR experiments involving (i) ethylene blocking of methane in zeolite NaY; and (ii) methane molecules trying to pass one another in the molecular sieve A1PO4-5.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 366: Symposium N – Dynamics in Small Confining Systems , 1994 , 207
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Ruthven, D.M., Principles of Adsorption and Adsorption Processes, (Wiley, New York, 1984).Google Scholar
2. Pfeifer, H., Phys. Reports 26C, 293 (1976).Google Scholar
3. Kärger, J. and Ruthven, D.M., Diffusion in Zeolites and Other Microporous Solids, (Wiley, New York, 1992).Google Scholar
4. Hong, U., Kärger, J., Pfeifer, H., J. Am. Chem. Soc. 113, 4812 (1991).Google Scholar
5. Nivarthi, S.S. and McCormick, A.V., J. Phys. Chem. submitted.Google Scholar
6. Nivarthi, S.S., McCormick, A.V., Davis, H.T., Chem. Phys. Lett. 229, 297 (1994).Google Scholar
7. Stejskal, E. O. and Tanner, J. E., J. Chem. Phys. 42, 288 (1965).Google Scholar
8. Kärger, J., Pfeifer, H., Heink, W., Adv. Magn. Res. 12, 1 (1988).Google Scholar
9. Callaghan, P.T., Aust. J. Phys. 37, 359 (1984).Google Scholar
10. Zibrowius, B., Caro, J., Karger, J., Z. Phys. Chem. (Leipzig) 269, 1101 (1988).Google Scholar
11. Levitt, D. G., Phys. Rev. A 8, 3050 (1973).Google Scholar
12. Kärger, J., Phys. Rev. E 47, 1427 (1993).Google Scholar
13. Wright, C.J. and Riekel, C., Mol. Phys. 36, 695 (1978).Google Scholar
14. Breck, D.W., Zeolite Molecular Sieves, (Wiley, New York, 1974).Google Scholar
15. Caro, J., Bülow, M., Schirmer, W., Kärger, J., Heink, W., Pfeifer, H., Zdanov, S.P., J. Chem. Soc., Faraday Trans. I81, 2541 (1985).Google Scholar
16. for example, Kärger, J. and Pfeifer, H., Zeolites 7, 90 (1987).Google Scholar
17. Demontis, P., Suffritti, G.B., Quartieri, S., Fois, E.S. and Gamba, A., Zeolites 7, 522 (1987).Google Scholar