nth - Order reaction with mole changes in porous catalysts in the molecular, transition, and Knudsen regimes

✍ Scribed by Ran Abed; Khanh-Dan Ha; Robert G. Rinker

• Publisher: American Institute of Chemical Engineers
• Year: 1974
• Tongue: English
• Weight: 300 KB
• Volume: 20
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690200228

✦ Synopsis

If a reaction with mole changes takes place isothermally in a porous catalyst, intrapellet concentration and pressure gradients can develop and mass transfer will occur by simultaneous diffusion and flow. A very useful equation for describing simuItaneous diffusion and flow in porous media is the one representing the extended dusty-gas model. It was derived by Mason et al. (1967) and independently by Gunn and King (1969). The equation contains three constants Co, C1, and Cz which characterize