J H Strange and J B W Webber 1997 Meas. Sci. Technol. 8 555 doi:10.1088/0957-0233/8/5/015
J H Strange and J B W Webber
Show affiliationsWe have developed a novel method of determining median pore size and pore size distributions as a function of spatial position inside a porous sample. Pore sizes have been measured with one-, two- and three-dimensional spatial resolutions, using nuclear magnetic resonance (NMR) cryoporometry in conjunction with magnetic resonance imaging techniques. NMR cryoporometry is a method of measuring pore sizes and pore size distributions in the range of less than 40 Å to over 2000 Å pore diameter, by the technique of freezing a liquid in the pores and measuring the melting temperature by NMR. Since the melting point is depressed for crystals of small size, the melting point depression gives a measurement of pore size.
06.30.Bp Spatial dimensions (e.g., position, lengths, volume, angles, and displacements)
Issue 5 (May 1997)
Received 19 September 1996, accepted for publication 20 January 1997, in final form 23 December 1996
J H Strange and J B W Webber 1997 Meas. Sci. Technol. 8 555
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