Title of article
Adsorption of Aqueous Solutions of Carboxylic Acids on Montmorillonite, Silicalite, H-ZSM-5 and their Na+- and Li+- Exchanged Forms
Author/Authors
AKBAR, SHER University of Balochistan - Department of Chemistry, Pakistan , PUNNATHANAM, SUDEEP Northwestern University - Department of Chemical and Biological Engineering, U.S.A. , PUKALA, MEGAN Northwestern University - Department of Chemical and Biological Engineering, U.S.A.
From page
664
To page
673
Abstract
The adsorption of binary carboxylic acid-water solutions on montmorillonite clay, silicalite, H-ZSM-5 zeolites and Li-exchanged montmorillonite, Na- and Li-exchanged ZSM-5 has been studied. The purity, morphology and textural properties were characterized by XRD and SEM techniques. Liquid phase adsorption experiments were carried out at room temperature in screwed cap septum 14 mL round bottom vials. The mole fractions before and after adsorption were determined refractometrically. Montmorillonite clays swelled to jell-form in aqueous carboxylic acid solutions indicating no significant separation selectivity for water or carboxylic acid. The zeolites showed hydrophobicity in the order: silicalite H-ZSM-5 Na- ZSM-5 Li- ZSM-5. The uptake of carboxylic acid was found in the order: C2HsCOOH CH,COOH HCOOH. At higher concentration the adsorption of carboxylic acids decreased.
Journal title
Journal of the Chemical Society of Pakistan
Journal title
Journal of the Chemical Society of Pakistan
Record number
2645731
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