The University of Southampton
University of Southampton Institutional Repository

The use of a rotating cylinder electrode to selective recover palladium from acid solutions used to manufacture automotive catalytic converters

Record type: Article

The reduction of palladium, rhodium and neodymium ions at concentrations of 0.94, 0.97 and 0.69 mol dm-3, respectively was studied in 1 mol dm-3 HNO3 or 1 mol dm-3 HCl, at a stainless steel and a vitreous carbon electrode, at 25 ºC. At a vitreous carbon electrode in a solution containing rhodium and palladium ions in 1 mol dm-3 HCl electrolyte, the reduction of metal ions occurred at a similar potential to the formation of hydrogen gas, which impeded selective separation of the two metals. At a stainless steel cathode in 1 mol dm-3 HNO3, palladium deposition occurred at a potential ? 0.35 V less negative than that of rhodium allowing the selective recovery of palladium. Neodymium ions were not electroactive in acidic chloride or nitrate media at pH 0. Using a solution obtained from a catalytic converter manufacturer containing palladium, rhodium and neodymium ions in 1 mol dm-3 HNO3, palladium ions were preferentially removed at 0.15 V vs. SHE at an average cumulative current efficiency of 57 %

PDF The_use_of_a_rotating_cylinder_electrode_to_selective_recover_palladium_from_acid_solutions_used_to_manufacture_automotive_catalytic_converters.pdf - Version of Record
Restricted to Repository staff only
Download (554kB)

Citation

Terrazas-Rodriguez, J.E., Gutierrez-Granados, S., Alatorre-Ordaz, M.A., Ponce de Leon, Carlos and Walsh, F.C. (2011) The use of a rotating cylinder electrode to selective recover palladium from acid solutions used to manufacture automotive catalytic converters Journal of Applied Electrochemistry, 41, (1), pp. 89-97. (doi:10.1007/s10800-010-0212-9).

More information

Published date: January 2011
Keywords: catalytic converters, metal recovery, neodymium, platinum group metals, palladium, rhodium, rotating cylinder electrode
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 169263
URI: http://eprints.soton.ac.uk/id/eprint/169263
PURE UUID: a1726c98-2548-414e-a1ec-08a561da7f13

Catalogue record

Date deposited: 14 Dec 2010 08:20
Last modified: 18 Jul 2017 12:19

Export record

Altmetrics

Contributors

Author: J.E. Terrazas-Rodriguez
Author: S. Gutierrez-Granados
Author: M.A. Alatorre-Ordaz
Author: F.C. Walsh

University divisions


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×