|
|
vol. 4, nr. 1 (2004)
|
Porosimetric curves of modified silica
|
|
|
Ryszard Świeboda, Ryszard Kocjan
|
|
|
Department of Analytical Chemistry, Medical University, ul. Staszica 6, 20-081 Lublin |
|
|
vol. 4 (2004), nr. 1,
pp. 185-210
|
|
|
abstract:
Methodological aspects of mercury intrusion porosimetry (MIP) for granular materials of nonporous and porous internal grain structure are discussed. Particular attention is paid to correction of mercury intrusion curves connected with sample shrinking, contact angles, temperature increase, pore character of the sample and shrinking of the dilatometer. Mercury intrusion curves measured for nonporous glass and for a few silicagels with modified surfaces used in chromatography corrected for the effects described above. The errors resulting from neglecting these corrections in porosimetric data are illustrated and discussed. Basing on the corrected MIP curves, bulk density and solid phase density (helium pycnometry) measurements, total, intergranular and intragranular pore volumes were calculated for the materials studied.
|
|
keywords:
mercury intrusion porosimetry, capillary-porous materials, data correction, shrinking
|
|
original in:
Polish
|
|
|
|
|
|
