Determination of Pore Size Distribution of Mesoporous and Macroporous Silicas by Means of Benzene-Desorption Isotherms
β Scribed by Hiromitu Naono; Masako Hakuman; Kazuyuki Nakai
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 197 KB
- Volume
- 165
- Category
- Article
- ISSN
- 0021-9797
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π SIMILAR VOLUMES
The adsorption isotherms of N 2 gas at 77 K and CCl 4 vapor at 283.1 5 , 298.1 5 , and 308.1 5 K were measured for six samples of the mesoporous silicas having uniform cylindrical pores (MCM-41). The pore radii of the six samples (r p ), which were evaluated from the Ξ± s plots of the N 2 isotherms,
## Abstract Simultaneous use of large standard molecules and small particles of the product examined gives rise to errors in pore size determination by size exclusion chromatography. This error is calculated for packings of spherical particles, thus making corrections possible.
In the present work, two kinds of porous silicas (PS-C16 Two kinds of the porous silicas with uniform and cylindrical and PS-C18) were synthesized from the calcined Na 4 SiO 4 pores were prepared from calcined Na 4 SiO 4 and cationic surfacand the cationic surfactant of [C 16 H 33 N(CH 3 ) 3 ]Cl or