Extraction of AuCl4- from HCl solutions by the chloride salt of the secondary amine Amberlite LA2 and estimation of the interaction coefficient between AuCl4- and H+-Reference-Cited by-同舟云学术

Extraction of AuCl4- from HCl solutions by the chloride salt of the secondary amine Amberlite LA2 and estimation of the interaction coefficient between AuCl4- and H+

Published:2001-09 Issue:9 Volume:2001 Page:384-386
ISSN:1747-5198
Container-title:Journal of Chemical Research
language:en
Short-container-title:Journal of Chemical Research

Author:

Alguacil Francisco José¹,Martínez Susana¹,Sastre Ana María²

Affiliation:

1. Centro Nacional de Investigaciones Metalúrgicas (CSIC), Avda. Gregorio del Amo 8, Ciudad Universitaria, 28040 Madrid, Spain

2. Departament d'Enginyeria Química, ETSEIB, UPC, Diagonal 647, 08028 Barcelona, Spain

Abstract

The equilibrium distribution of AuCl4- between hydrochloric acid and the chloride salt of the secondary amine Amberlite LA2 in xylene was investigated. The extraction reaction is exothermic (ΔH° = −20.8 kJ/mol). The stoi-chiometry of the complex formed in the organic phase can be represented by R'R″NHH+AuCl4- and the extraction equilibrium constant depends on the ionic strength. From this dependency it was found that log K° = 3.9 and the interaction coefficient between AuCl4- and H+ is 0.24.

Publisher

SAGE Publications

Subject

General Chemistry

Link

http://journals.sagepub.com/doi/pdf/10.3184/030823401103170179

Reference25 articles.

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