Substitutional inhibition mechanism of mild steel hydrochloric acid corrosion by hexylamine and dodecylamine
Hexylamine and dodecylamine were investigated as inhibitors of mild steel hydrochloric acid corrosion, in concentrations from 1 x 10 exp -6 to 1.0 M, at a temperature of 298 K. For a given inhibitor concentration, dodecylamine showed higher effectiveness than hexylamine. The inhibitor mechanism was...
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| Veröffentlicht in: | Journal of applied electrochemistry 2000-10, Vol.30 (10), p.1173-1177 |
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| container_title | Journal of applied electrochemistry |
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| creator | BASTIDAS, J. M POLO, J. L CANO, E |
| description | Hexylamine and dodecylamine were investigated as inhibitors of mild steel hydrochloric acid corrosion, in concentrations from 1 x 10 exp -6 to 1.0 M, at a temperature of 298 K. For a given inhibitor concentration, dodecylamine showed higher effectiveness than hexylamine. The inhibitor mechanism was treated as a substitutional adsorption process according to Flory-Huggins (FH), Dhar-Flory-Huggins (DFH) and Bockris Swinkels (BS) isotherms. The best approach was obtained using FH and DFH isotherms, with one molecule of inhibitor replacing three molecules of water. A structural parameter, the projected molecular area of these two inhibitors, was calculated to elucidate inhibitor orientation in the adsorption process. |
| doi_str_mv | 10.1023/A:1004036430497 |
| format | Article |
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| subjects | Adsorption Applied sciences Chemistry Corrosion Corrosion mechanisms Electrochemistry Exact sciences and technology General and physical chemistry Metals. Metallurgy Study of interfaces |
| title | Substitutional inhibition mechanism of mild steel hydrochloric acid corrosion by hexylamine and dodecylamine |
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