In:
Particle & Particle Systems Characterization, Wiley, Vol. 2, No. 1-4 ( 1985-01), p. 160-165
Abstract:
A dual gas flow chromatographic method is proposed. In this method, two different gas streams are introduced separately, one as the carrier gas and the other as the gas for creating the adsorption equilibrium. The thermodesorbed absorbate is eluted by a pure carrier gas. The complete curve of adsorption isotherm can be determined easily; therefore, both the specific area and the pore size distribution can be obtained at ordinary pressure. In addition, this method can be easily changed into the continuous flow method given by Nelsen and Eggertsen [1]. The relationship among R (rate) ‐ V (volume) ‐ A (area) ‐ α (ratio) in elution chromatography are investigated, and the volume of desorbed gas can be obtained from V d = KRA d directly with K = (α V )/( RA ). The standardization for peak area is simplified and more convenient for the treatment by a microcomputer. Some results of specific surface area and pore size distribution by this method, and their comparison with those from other methods are given altogether, and the coincidence is good.
Type of Medium:
Online Resource
ISSN:
0934-0866
,
1521-4117
DOI:
10.1002/ppsc.19850020129
Language:
English
Publisher:
Wiley
Publication Date:
1985
detail.hit.zdb_id:
142874-3
detail.hit.zdb_id:
1481071-2
detail.hit.zdb_id:
246753-7
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