Hostname: page-component-5c6d5d7d68-txr5j Total loading time: 0 Render date: 2024-08-13T23:48:57.080Z Has data issue: false hasContentIssue false

Molecular Simulation of Gases in Porous Silicates

Published online by Cambridge University Press:  28 February 2011

Phillip I. Pohl
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185-0727; Dept. Chemical Engineering, University of New Mexico, Albuquerque, NM 87131;
Douglas M. Smith
Affiliation:
Dept. Chemical Engineering, University of New Mexico, Albuquerque, NM 87131; NanoPore Corporation, Albuquerque, NM 87106
Get access

Abstract

In this work we generate computer models of zeolites, imogolite, and microporous silica and evaluate the pore structure of each. Our purpose is to contrast the diffusional aspects of gases in these different materials with respect to their application as gas separating membranes. The concepts of Knudsen, surface and micropore diffusion will be evaluated for each model. The advantage of modeling these materials and processes with available molecular techniques is clearly demonstrated by testing assumptions of highly regarded theories.

Type
Research Article
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. Rouquerol, J.; Avnir, D.; Fairbridge, C.W.; Everett, D. H.; Haynes, J. H.; Pernicone, N.; Ramsay, J D. F.; Sing, K. S. W.; Unger, K. K., 1994, Pure Appl. Chem., 66, 1739.Google Scholar
2 , Brinker, C. J., Ward, T.L. Sehgal, R. Raman, N. K. Hietala, S.L. Smith, D.M. Hua, D.W., Headley, T, J Memb. Sci., 1993, 66, 271.Google Scholar
3. Chen, N. Y., Degnan, T. F., and Smith, C. M.. Molecular Transport and Reaction in Zeolites, 1994, VCH Publishers, Inc, New York.Google Scholar
4. Schaefer, D. W., MRS Bulletin, 1994, xix(4), 49.Google Scholar
5. Xiao, J., and Wei, J., Chem. Engr. Sci., 1992, 47(5), 1123.Google Scholar
6. Way, J D., and Roberts, D. L., Sep. Sci. and Tech., 1992, 27(1), 2941.Google Scholar
7. Shelekin, A. B., Dixon, A. G., and Ma, Y. H., J Memb. Sci., 1994, (in press).Google Scholar
8. Ackerman, W. C., Hua, D. W.; Kim, Y-W.; Huling, J. C; Smith, D. M.; 1994, Characterization of Porous Solids III Rouquerol, F. Rodriguez-Reinoso, K. S. Sing, W., and Unger, K. K., eds, 735, Elsevier.Google Scholar
9. Ackerman, W. C.; Smith, D. M.; Huling, J C.; Kim, Y-W.; Bailey, J K.; and Brinker, C. J., Langmuir, 1993, 9, 10511057.Google Scholar
10. Sehgal, R; Huling, J. C.; Brinker, C. J., 1994, Proceedings of the Third International Conference on Inorganic Membranes, Worcester, MA, (in Press).Google Scholar
11. Imamura, S.; Hayashi, Y; Kajiwara, K; Hoshino, H; Kaito, C., Ind. Eng. Chem. Res., 1993, 32, 600.Google Scholar
12. Cradwick, P.D. G.; Farmer, V. C.; Russell, J. D.; Masson, C. R.; Wada, K.; Yoshinaga, N. Nature, Phys. Sci., 1972, 240, 187.Google Scholar
13. Farmer, V. C.; Fraser, A. R., in International Clay Conference, Mortland, M. M., Farmer, V. C., Eds.; Elsevier Science Publishers: Amsterdam, 1979; pp 547553.Google Scholar
14. Wada, S.; Wada, K. Clays Clay Minera. 1982, 30, 123.Google Scholar
15. MacElroy, J.M.D., and Raghavan, K. J. Chem. Phys., 1990, 93(3), 2068.Google Scholar
16. Nakano, A., L. Bi, R.K. Vashishta, Kalia P., Phys. Rev. B, 1994, 49(14), 9441.Google Scholar
17. Pohl, P. I., Faulon, J. L., and Smith, D. M., 1994, ‘Molecular Dynamics Computer Simulations of Silica Aerogels’, accepted for publication J. Non Cryst. Solids.Google Scholar
18. Feuston, B. P.; Garofalini, S. H.; J Phys. Chem., 1990, 94, 5351.Google Scholar
19. Hirshfelder, J. Curtiss, O. C. F., and Bird, R. B., Molecular Theory of Gases and Liquids, (John Wiley & Sons, New York, 1954).Google Scholar
20. Everett, D. H., and Powl, J. C. J. Chem. Soc. Faraday Trans I, 1976, 72, 619636.Google Scholar
21. Derouane, E. G., J. Catal., 1986, 100, 541544.Google Scholar
22. Davis, M. E.; Saldamiage, C.; Montes, C.; Garces, J.; Crowder, C., Zeolites, 1988, 8, 362.Google Scholar
23. Pohl, P. I., and Faulon, J. L., 1994, ‘Molecular Dynamics Computer Simulations of Microporous Silica’, Proc. of Third International Conference on Inorganic Membranes.Google Scholar
24. Cussler, E., 1994, Diffusion, Cambridge.Google Scholar
25. Heffelfinger, G. S, and van Swol, F. J. Chem Phys., 1994, 100(10), 7548.Google Scholar
26. Pohl, P. I., and Heffelfinger, G. S., 1994, ‘Molecular Dynamics Computer Simulations of Diffusion in Porous Silicates’, Paper N5.8 at MRS Fall Meeting, Dynamics in Small Confining Systems Symposium, Boston.Google Scholar