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Adsorption of xylene isomers on Na-BETA zeolite: Equilibrium in batch adsorber

Molaei Dehkordi, A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.micromeso.2012.12.048
  3. Publisher: 2013
  4. Abstract:
  5. In this article, adsorption of p-xylene, m-xylene, o-xylene, and ethylbenzene on Na-BETA type zeolite in liquid phase at 15, 25, and 35 °C has been studied and the single adsorption isotherms have been obtained and reported. The Langmuir isotherm model was used to describe the experimental adsorption isotherm data. It was found that p-xylene is more strongly adsorbed component followed by ethylbenzene, m-xylene and o-xylene. This means that this adsorbent is selective for p-xylene. Using Langmuir isotherm model, the saturation adsorption capacities of the adsorbent were obtained as follows 143 mg/g for p-xylene, 105 mg/g for ethylbenzene, 83 mg/g for m-xylene, and 68 mg/g for o-xylene at 25 °C. The heat of adsorption was also estimated to be 12.0, 11.4, 9.6, and 8.3 kJ/mol-1 for p-xylene, ethylbenzene, m-xylene, and o-xylene, respectively
  6. Keywords:
  7. Isotherm ; Langmuir model ; Na-BETA zeolite ; Adsorbers ; Heat of adsorption ; Langmuir isotherm models ; Langmuir models ; Liquid Phase ; M-Xylene ; O-xylene ; P-xylene ; Saturation Adsorption ; Xylene isomers ; Adsorption ; Adsorption isotherms ; Ethylbenzene ; Isomers ; Isotherms ; Sodium ; Xylene
  8. Source: Microporous and Mesoporous Materials ; Volume 172 , 2013 , Pages 136-140 ; 13871811 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1387181113000280