BS 7591-2:1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Porosity and pore size distribution of materials Method of evaluation by gas adsorption
Hardcopy , PDF
English
15-11-1992
28-09-2007
Committees responsible
Foreword
Method
Introduction
1 Scope
2 Informative references
3 Definitions
4 Principles
5 Calibration
6 Sample preparation
7 Static volumetric method
8 Flow volumetric method
9 Gravimetric method
10 Types of isotherm
11 Calculation of pore size distribution
12 Reporting of results
Figures
1 Types of pore
2 Schematic diagram of typical apparatus arrangement
for nitrogen volumetric method
3 Types of physisorption isotherms (amount adsorbed
against relative pressure)
4 Types of hysteresis loops
5 Typical t- or alpha s-plots
6 Typical adsorption isotherm showing adsorption and
desorption branches
7 Typical t-plot
8 Typical cumulative pore size distribution
9 Typical differential pore size distribution
Table
1 Example calculation of mesopore size distribution
List of references
Provides comparative method limited to the determination of nitrogen adsorbed as a function of its relative pressure. Suitable for a wide range of porous materials to determine micropore volume below 2 nm and the calculation of mesopore size distribution between 2 nm and 50 nm.
| Committee |
LBI/37
|
| DevelopmentNote |
Supersedes 91/76042 DC (04/2005) Reviewed and confirmed by BSI, February 2007. (01/2007)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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