Li, Shiguang ; Falconer, John L. ; Noble, Richard D. ; Krishna, R. (2006) Modeling permeation of CO2/CH4, CO2/N2, and N2/CH4 mixtures across SAPO-34 membrane with the Maxwell-Stefan equations Industrial & Engineering Chemistry Research, 46 (12). pp. 3904-3911. ISSN 0888-5885
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ie0610703
Related URL: http://dx.doi.org/10.1021/ie0610703
Abstract
The objective of this paper is test the capability of the Maxwell-Stefan (M-S) diffusion formulation to predict binary mixture permeation fluxes across a SAPO-34 membrane using only data on pure-component adsorption isotherms and diffusivities. Experiments were carried out for permeation of CO2/CH4, CO2/N2, and N2/CH4 mixtures across a SAPO-34 membrane with upstream pressures ranging to 7.2 MPa, ensuring that high occupancies within the zeolite layer are reached. Good agreement between the M-S mixture model and experiments are obtained provided the binary exchange coefficients Ð12 in the M-S equations are assumed to have high enough values to ensure that intercage hops of the species occur independently of one other.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 65356 |
| Deposited On: | 17 Oct 2011 03:26 |
| Last Modified: | 17 Oct 2011 03:26 |
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