Determination of the size of particles of highly dispersed materials by low temperature nitrogen adsorption

The average size of particles of highly dispersed materials (Al 2 O 3 , TiO 2 , Y 2 O 3 ) is calculated from their specific surface areas. The latter is determined with the analysis of sorption capacity of materials with nitrogen at −196°C in the ranges of relative equilibrium pressures of 0.05–0.35...

Full description

Saved in:
Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2013-04, Vol.87 (4), p.674-679
Main Authors: Zhilkina, A. V., Gordienko, A. A., Prokudina, N. A., Trusov, L. I., Kuz’micheva, G. M., Dulina, N. A., Savinkina, E. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
Physical Chemistry of Surface Phenomena
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The average size of particles of highly dispersed materials (Al 2 O 3 , TiO 2 , Y 2 O 3 ) is calculated from their specific surface areas. The latter is determined with the analysis of sorption capacity of materials with nitrogen at −196°C in the ranges of relative equilibrium pressures of 0.05–0.35 (the Brunauer-Emmett-Teller method, BET) and 0.4–0.7 (the comparative method). Good agreement is obtained between results produced with the comparative method and familiar methods of analysis such as scanning and transmission electron microscopy and small-angle X-ray scattering.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024413040328