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Enhanced mass transport to a reticulated vitreous carbon rotating cylinder electrode using jet flow

Reade, G.W., Ponce de Leon Albarran, C.A. and Walsh, F.C. Rolls Royce plc, P.O. Box 31, Derby DE24 8BJ, UK. (2006) Enhanced mass transport to a reticulated vitreous carbon rotating cylinder electrode using jet flow Electrochimica Acta, 51, (13), pp. 2728-2736. (doi:10.1016/j.electacta.2005.08.009).

Record type: Article


The mass transport characteristics of a porous, rotating cylinder electrode (RCE, 1.0 cm diameter; 0.5, 0.9 or 1.2 cm long; 1.25, 2.25, 3.00 cm3 overall volume; 250–2000 rpm speed) fabricated from reticulated vitreous carbon (RVC, 60 ppi or 100 ppi) were investigated. The deposition of copper from an acid sulfate electrolyte (typically, deoxygenated 1mM CuSO4 in pH 2, 0.5M Na2SO4 at 298 K) was used as a test reaction. The effect of a jet flow of electrolyte towards the electrode and the introduction of polypropylene baffles in the electrochemical cell were studied at controlled rotation rates of the RCE. The product of mass transport coefficient and volumetric electrode area (kmAe) is related to the rotation speed of the electrode. For the 60 ppi RVC RCE, the jet electrolyte flow (3.5 cm3 s?1) enhanced the mass transport rates by a factor of 1.46 at low rotation speeds; this factor was reduced to 1.08 at high rotation speeds. For a 100 ppi electrode, the enhanced mass transport decreased from 1.26 to 1.03 at low and high rotation rates, respectively. Under the experimental conditions, baffles showed little effect on the mass transport rates to the RVC RCE. Mass transport to jet flow at an RVC RCE is compared to other RCEs using dimensionless group correlation.

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Submitted date: 24 May 2005
Published date: 5 March 2006
Keywords: baffles, copper deposition, jet flow, mass transport, porous electrodes, reticulated vitreous carbon, rotating cylinder electrode
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 27840
ISSN: 0013-4686
PURE UUID: d99227ae-bfdd-47fb-a1fe-8780a541775d

Catalogue record

Date deposited: 27 Jun 2006
Last modified: 17 Jul 2017 16:03

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