Thermodynamic studies on adsorption of Methanol vapours on metal-exchanged Zeolite-A. | [Pakistan Journal of Analytical Chemistry • 2004]

Author(s):

1. G. Yasmeen: Department of Chemistry, Bahauddin Zakariya University Multan, Pakistan

2. N. Ikram: Department of Chemistry, Bahauddin Zakariya University Multan, Pakistan

3. S. Hafeez: Department of Chemistry, Bahauddin Zakariya University Multan, Pakistan

4. T. M. A Ansari: Department of Chemistry, Bahauddin Zakariya University Multan, Pakistan

5. K. Khattak: Department of Chemistry, Quaid-i-Azam University Islamabad, Pakistan

6. M. Afzal: Department of Chemistry, Quaid-i-Azam University Islamabad, Pakistan

Abstract:

Adsorption of methanol vapors on zeolite-4A and metals (Co, Ni, and Cu) exchanged zeolite-A has been studied as a function of temperature. Thermodynamic parameters such as ΔG°, ΔH, and ΔS° are calculated. It is observed that in most of the cases, metal exchanged zeolite samples have more adsorption affinity towards methanol as compared to parent zeolite. From adsorption data isosteric heat of adsorption were also calculated as a function of coverage and temperature, which is similar to -ΔH.

Page(s): 68-76

DOI: DOI not available

Published: Journal: Pakistan Journal of Analytical Chemistry, Volume: 5, Issue: 2, Year: 2004

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