Multidimensionally resolved pore size distributions
- 43 Downloads
A novel method of determining median pore size and pore size distributions as a function of spatial position inside a porous sample is described. Pore sizes have been measured with 1-, 2- and 3-dimensional spatial resolution, using NMR cryoporometry in conjunction with magnetic resonance imaging techniques. The method is suitable for pore diameters in the range of 30 Å to over 2000 Å pore diameter, and is based on the technique of freezing a liquid in the pores and measuring the melting temperature by nuclear magnetic resonance. Since the melting point is depressed for crystals of small size, the melting point depression gives a measurement of pore size.
KeywordsPore Size Distribution Digital Signal Processor Melting Point Depression Median Pore Size Read Gradient
Unable to display preview. Download preview PDF.
- Harris R.K.: Nuclear Magnetic Resonance Spectroscopy. A Physicochemical View. Longman Scientific & Technical 1987.Google Scholar
- Strange J.H., Webber J.B.: Characterization of Porous Solids by NMR. 12th Specialized Colloque Ampere, Corfu 1995.Google Scholar
- Macnair A.: Ph.D. Thesis, University of Kent 1995.Google Scholar
- Aikens R.S., Kerwin W.J. in: Active RC Filters: Theory and Application (Huelsman L.P., ed.). New York: Dowden, Hutchinson & Ross, Inc., John Wiley & Sons, Inc. 1976Google Scholar
- Hayes C.E., Scheneck J.F., Mueller O.M., Eash M.: J. Magn. Reson.63, 622–628 (1985)Google Scholar
- Strange J.H., Halse M.R.: Encyclopedia of NMR, pp. 2472–2481. New York: Wiley, ISBN 0-471 958 395, 1996.Google Scholar
- Codd S.L.: Ph. D. Thesis, University of Kent 1996.Google Scholar
- Callaghan P.T.: Principles of Nuclear Magnetic Resonance Microscopy. Oxford: Oxford Science Publications, Clarendon Press 1993.Google Scholar
- Kroon D.J.: Laboratory Magnet, pp. 186–189. Eindhoven: Philips Technical Library 1968.Google Scholar
- Rahman H.J.: Ph.D. Thesis, University of Kent 1991.Google Scholar
- Creen T.A.P.: M.Sc. Thesis, University of Kent 1994.Google Scholar