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Extractive distillation of propanol–water mixtures employing less‐soluble and sparingly soluble salts as separating agents
Author(s) -
Zaidi Syed A. H.
Publication year - 1987
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280380204
Subject(s) - chemistry , propanol , boiling , aqueous solution , salt (chemistry) , distillation , chromatography , boiling point , extractive distillation , 1 propanol , saturation (graph theory) , inorganic chemistry , organic chemistry , ethanol , mathematics , combinatorics
Extractive distillation of 1‐propanol and 2‐propanol from the respective organo‐aqueous mixtures employing less soluble (Na IO 3 , K 2 SO 4 , PbCl 2 ) and sparingly soluble salts (Ca(OH) 2 , CaSO 4 , BaSO 4 , PbSO 4 , PbCO 3 ) dissolved to saturation in the boiling liquid phase at atmospheric pressure has been examined. The 98% purification of 2‐propanol obtained with Ca ++− , Pb ++ and Ba ++ salts suggests large perturbation of phase equilibria with relatively small salt concentrations (9 × 10 −6 M for Pb ++ ) on the 2‐propanol‐water system.