Research Article
Kinetics of Hydrogen Evolution on Copper Electrode Involving Organic Acids as Proton Donors
Table 3
Equilibrium characteristics of OA solutions and the kinetic parameters of hydrogen evolution.
| | OA | (mM) | (M) | pH | (mM) | 106 D (cm2 s−1) | α | (A cm−2) | (mA cm−2 V-05 s0.5) | | Equation (21) | exper. |
| | Gluconic | 40 | 0.3 | 2.95 | 43.3 | 6.8 | 0.61 | 10 | 26.9 | 26.7 | | Malic | 40 | 0.3 | 3.0 | 76.2 | 3.1 | 0.64 | 8 | 32.7 | 33.6 | | Tartaric | 40 | 0.3 | 2.9 | 85.0 | 2.1 | 0.64 | 9 | 30.1 | 30.7 | | Gluconic | 20 | 0.5 | 3.0 | 39.5 | 1.5 | 0.60 | 8 | 11.4 | 11.2 |
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