Intraparticle pressure gradients in porous catalysts

✍ Scribed by Seiya Otani; Noriaki Wakao; J. M. Smith

• Publisher: American Institute of Chemical Engineers
• Year: 1964
• Tongue: English
• Weight: 909 KB
• Volume: 10
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690100134

✦ Synopsis

Adsorption isotherms for the system methane-nitrogen molecular sieves were made for temperatures between 123" and 295°K. and pressures up to 8 5 atm. Constants for the Langmuir equation were obtained for the pure components. For the mixtures, constants for a modified Langmuir equation are presented. The results indicate that for this system selectivity is based only on adsorptivity of the components. Adsorption increases with decreasing temperature and approaches a maximum of about 5 mg. moles of nitrogen or methane at 123" and 175" re- spectively. This is equivalent to approximately 9 5 % monoloyer coverage.

Transient absorption at small contact times: moving-band absorber,