Direct transport parameters measurement versus their estimation from mercury penetration in porous solids
✍ Scribed by P. Schneider; D. Gelbin
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 658 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
✦ Synopsis
It has become widespread practice to rely on mercury penetration data for the determination of pore-size distribution when calculating transport processes occurring in the porous structure of catalysts and adsorbents. The authors, working in independent laboratories, summarize recent results which show that mercury penetration analysis is not reliable. A mean transport-pore model (MTPM) is proposed which requires permeation, steady-state diffusion or pulse chrornatographic measurements with several gases or gas pairs and/or at different pressures and temperatures. This method provides basic parameters for calculating the transport processes in catalysis or adsorption, making no direct use of mercury penetration and other textural data.