The generalized Maxwell-Stefan model for diffusion in zeolites: sorbate molecules with different saturation loadings
The generalized Maxwell-Stefan model for diffusion in zeolites: sorbate molecules with different saturation loadings
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DOI：
10.1016/s0009-2509(99)00564-3
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发表时间：
2000-08-01
影响因子：
4.7
通讯作者：
Krishna, R
中科院分区：
文献类型：
--
作者：
Kapteijn, F;Moulijn, JA;Krishna, R
使用Maxwell-Stefan方法，已经导出了烃混合物在沸石中的扩散的表达式，其中各个组分具有不同的饱和负载。该Maxwell-Stefan扩散模型结合理想吸附溶液（IAS）理论和单组分吸附等温线，对乙烷/甲烷和丙烷/甲烷混合物通过silicalite-1膜的渗透通量提供了上级、定性和定量的预测。吸附饱和负荷的差异在混合物吸附的熵效应中变得明显。(C)2000爱思唯尔科技有限公司版权所有。
Using the Maxwell-Stefan approach, expressions have been derived for the diffusion of mixtures of hydrocarbons in zeolites wherein the individual components have different saturation loadings. This Maxwell-Stefan diffusion model, in combination with the Ideal Adsorbed Solution (IAS) theory and the single-component adsorption isotherms, provides a superior, qualitative and quantitative, prediction of the permeation fluxes of ethane/methane and propane/methane mixtures through a silicalite-1 membrane. The difference in adsorption saturation loadings becomes apparent in the entropy effects in the mixture adsorption. (C) 2000 Elsevier Science Ltd. All rights reserved.