ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
2-Hydroxy-5-(1,1,3,3-tetramethylbutyl)-benzaldehyde E-oxime (1), 2-hydroxy-5-(1,1,3,3-tetramethylbutyl)-acetophenone E-oxime (2) and 2-hydroxy-5-(1,1,3,3-tetramethylbutyl)-benzophenone E-oxime (3) were synthesized and used for copper extraction from acidic sulphate solutions. The dissociation constants of the phenolic group of the oximes and the stability constants for their complexes with copper were determined. An extraction model is discussed taking under consideration the association of the oxime and the solvation of the complex.It was found that 1 can extract copper more efficiently from acidic aqueous solutions and at a higher rate than 2 and 3. 1 is a stronger acid than 2 and 3. However, it is a weaker acid than the Z isomer of 3.The proposed model fits the experimental data well. When the oxime is used in excess, solvation of the copper complex seems probable.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19833250615
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