Diffusion through carbon micropores-4 years later

✍ Scribed by Madhukar B. Rao

• Book ID: 103002970
• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 319 KB
• Volume: 29
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(91)90021-a

✦ Synopsis

The activated diffusion through micropores is a subject of considerable importance in the practical application of carbon adsorhents. molecular sieves, and catalyst supports. A theoretical model for the interaction of complex nonspherical molecules with graphite was used to characterize the interaction of He, Ar, CO. CO,. O?, N2, and H2 with idealized carbon micropores. The calculations yielded values for the critical pore dimension below which the diffusion for these species becomes activated: these values agree well with relative diffusion rates observed experimentally. In addition, estimates of the relative ease of diffusion of these gases were made from the magnitude of the various diffusional energy barriers within the micropores.