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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2995
Title: Extraction and separation of platinum, palladium and rhodium using Cyanex 923 and their recovery from real samples
Authors: Gupta B.
Singh I.
Published in: Hydrometallurgy
Abstract: Platinum group metals find extensive use in automobile catalysts, space materials and cancer therapy. Their natural resources are limited thus their recovery from the secondary sector has assumed a great significance. Liquid-liquid extraction provides an effective methodology for the said purpose. The present paper discusses the extraction behavior of platinum(IV), rhodium(III) and palladium(II) from HCl, H2SO4 and HNO3 (0.10-6.0 mol L- 1) media by toluene solution of Cyanex 923. Detailed studies have been conducted by varying the equilibration time, temperature, diluent and concentration of extractant. An assessment of the loading capacity, regeneration power and stability of extractant has been made. The extraction behavior of associated metals namely gold, silver, iron, nickel, cobalt, chromium, copper and aluminum has been investigated and the conditions for the binary separations involving platinum metals have been optimized. The stoichiometric ratio of the extracting species for platinum and palladium has been worked out. Based on the extraction data platinum, palladium and rhodium have been recovered from some spent commercial materials. © 2013 Published by Elsevier B.V.
Citation: Hydrometallurgy (2013), 134-135(): 11-18
URI: https://doi.org/10.1016/j.hydromet.2013.01.001
http://repository.iitr.ac.in/handle/123456789/2995
Issue Date: 2013
Keywords: Cyanex 923
Palladium
Platinum
Rhodium
Solvent extraction
ISSN: 0304386X
Author Scopus IDs: 7402195167
57195320309
Author Affiliations: Gupta, B., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand-247 667, India
Singh, I., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand-247 667, India
Funding Details: Thanks are due to Cytec Inc., Canada, for gifting the Cyanex 923 sample. The financial support to one of the authors by the Council of Scientific and Industrial Research (CSIR), New Delhi, India is gratefully acknowledged.
Corresponding Author: Gupta, B.; Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand-247 667, India; email: dr.binagupta@gmail.com
Appears in Collections:Journal Publications [CY]

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