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eparation of Close Boiling Acidic Isomers by Dissociation Extraction

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Title: eparation of Close Boiling Acidic Isomers by Dissociation Extraction

Authors: A. S. Ahmed, M. B. Bhatty, M. T. Saeed, M. P. I. Qazi

Journal: Pakistan Journal of Scientific and Industrial Research (Series B: Biological Sciences)

HEC Recognition History
Category From To
Y 2023-07-01 2024-09-30
Y 2022-07-01 2023-06-30
Y 2021-07-01 2022-06-30
Y 2020-07-01 2021-06-30
Y 1900-01-01 2005-06-30

Publisher: PCSIR Scientific Information Centre

Country: Pakistan

Year: 2005

Volume: 48

Issue: 4

Language: English

Keywords: : dissociation extractioncresolsmonoethanolamineisomer separationclose-boiling isomers

Categories
Separation Science (32) Extraction Chemistry (14) Organic Chemistry (862) Chemical Engineering (4680) Analytical Chemistry (1778)

Abstract

The separation of m-cresol and p- cresol was studied using dissociation extraction technique. The separation factors obtained for cresols-carbon tetrachloride-caustic soda system were in the range of 1.40 to 1.52, whereas for cresolscarbon tetrachloride-monoethanolamine system were in the range of 1.297 to 1.417. Isomer ratios, concentration of cresols and the strength of aqueous extractant have a significant influence on the separation of cresols. The organic acid (m- cresol ) was successfully back-extracted from aqueous caustic soda with a non-polar organic solvent, octanol. pH of the aqueous phase and the choice of organic solvent have an important role in the back-extraction of m- cresol.

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