CH4, C2H6, and C2H4 Phase Equilibria on SAPO-34 Using the Vacancy Solution Theory

被引：1

作者：

Masoudi-Nejad, Mojtaba ^{[1
]}

Fatemi, Shohreh ^{[1
]}

Joda, Marzieh ^{[1
]}

机构：

[1] Univ Tehran, Coll Engn, Sch Chem Engn, Tehran, Iran

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 11期

关键词：

adsorption isotherms; mixture adsorption; vacancy solution theory; excess Gibbs energy models; WALLED CARBON NANOTUBES; GAS-ADSORPTION; SOLUTION MODEL; SEPARATION; CO2; SELECTIVITY; CATALYSTS; EQUATION; ETHYLENE; DIOXIDE;

D O I：

10.1080/01496395.2014.999789

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Adsorption data of single, binary, and ternary mixtures of methane, ethane, and ethylene on Silicoalumina-Phosphate molecular Sieve (SAPO-34) were obtained experimentally in the pressure range of 0 to 600 kPa at 303, 313, and 323 K. The adsorbed equilibrium concentration was predicted based on the vacancy solution theory (VST) using excess Gibbs energy (EGE) models of activity coefficients. EGE models were studied comparatively, i.e., the Wilson, Flory Huggins, and NRTL equations. The VSM-model results were compared with the mixture adsorption data. The results revealed higher capability of EGE models against the extended Langmuir equation in predicting adsorption behavior of the so-called gas mixture.

引用

页码：1629 / 1640

页数：12

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