|
|||||
|
|
Diffusion in a unidimensional zeolite pore system: Propane in AlPO4-5 |
|
| Affiliation: | 1. Institute of Solids Process Engineering and Particle Technology, Hamburg University of Technology, Denickestraße 15, 21073 Hamburg, Germany;2. BASF SE, RCP/MK - L540, Carl-Bosch-Straße 38, 67056 Ludwigshafen, Germany;3. Institute of Technical and Macromolecular Chemistry, University of Hamburg, Bundesstraße 45, 20146 Hamburg, Germany |
| Abstract: | Self-diffusion and diffusive transport of propane in large (≈ 180 μm) crystals of AlPO4-5 have been studied by ZLC and tracer ZLC methods. In contrast to the results of recent studies of the self-diffusion of CH4 and CF4 in the same zeolite by the PFG NMR method the results of the present study show a rather fast one-dimensional Fickian diffusion process (D ≈ 10−5–10−6 cm2 s−1 at 300 K) with no evidence of single-file behavior. A possible explanation for this apparent discrepancy is suggested. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |