Actions for Recovery of platinum from concentrated sodium chloride brine by electrodeposition on vitreous carbon [electronic resource].

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Recovery of platinum from concentrated sodium chloride brine by electrodeposition on vitreous carbon [electronic resource].

Published
Livermore, Calif : Lawrence Livermore National Laboratory, 1984.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 25 : digital, PDF file
Additional Creators
Lawrence Livermore National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The voltammetric characteristics of Pt(II) and Pt(IV) have been examined at a vitreous carbon electrode in slightly acidic 3M (approx. 15 wt %) NaCl solutions. Pt(IV) is reduced to Pt(II) at approx. 0 V and Pt(II) is reduced to Pt(0) at approx. -0.5 V vs Ag-AgCl. The rate of deposition of platinum metal at -0.5 V is very low on bare carbon, but increases as the coverage of platinum increases. The potential at which hydrogen is evolved in this medium is approx. -0.85 V. A technique has been tested for the removal of sub-part-per-million levels of platinum from the high-salinity brine by controlled-potential electrolysis using a reticulated, vitreous-carbon, flow-through electrode. However, at control potentials negative enough to begin to electrodeposit the platinum at a significant rate, simultaneous reduction of hydrogen ion reduces the current and energy efficiency to an unacceptable level.
Report Numbers
E 1.99:ucid-20028
ucid-20028
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1984.
"ucid-20028"
"DE84009084"
Stephens, F.B.; Harrar, J.E.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14386149