Physicochemical Transport Properties of Aqueous Sodium Metaborate Solutions for Sodium Borohydride Hydrogen Generation and Storage and Fuel Cell Applications |
| Journal |
Advanced Materials Research (Volumes 15 - 17) |
| Volume |
THERMEC 2006 Supplement |
| Pages |
267-274 |
| DOI |
10.4028/www.scientific.net/AMR.15-17.267 |
| Online since |
February, 2006 |
| Authors |
Caroline R. Cloutier,
Akram Alfantazi,
Elod Gyenge
|
| Keywords |
Conductivity, Hydrogen Storage, Sodium Metaborate, Viscosity |
| Abstract |
The conductivity and viscosity of aqueous solutions of NaBO2 were measured as a function of
concentration at 25oC. Conductivity data was analyzed with various Kohlrausch correlations and the
limiting molar conductivity of the BO2
- ion at infinite dilution was estimated to be of 30.59 S.cm2/mol.
From this value, the mobility, diffusion coefficients and transference number for the BO2
- ion were
calculated as 3.17x10-4 cm2/s.V, 8.14x10-6 cm2/s, and 0.379 respectively. Ion-solvent and ion-ion
interactions were studied with Jones-Dole type correlations, which were employed to analyze the
viscosity data. A value of -0.4660 1/M was estimated for the BO2
- B- coefficient. |
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