Open AccessAdsorption of Some Allylic Compounds on Polarized 304 Austenitic Stainless Steel Electrodes in H2SO4 Solutions
Author(s) -
Hamid A. AlMegren,
A. A. AlSuhybani
Publication year - 1996
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749601300105
Subject(s) - adsorption , chemistry , allylic rearrangement , austenite , kinetic energy , cathodic protection , electrode , open circuit voltage , inorganic chemistry , anode , analytical chemistry (journal) , catalysis , voltage , chromatography , organic chemistry , crystallography , microstructure , physics , quantum mechanics
The adsorption of different compounds containing the allylic group on 304 austenitic stainless steel (304SS) in H 2 SO 4 solutions was investigated under different conditions. These include the effect of H 2 SO 4 (1–12 M), temperature (5–45°C), inhibitor concentration [inhibitor] (10 −6 10 −1 M) and the effect of Cl − on the inhibition efficiency (%Ef). The dependence of the open circuit potential (OCP) on time as well as on the above-mentioned conditions was also investigated. The current densities (cds) for the cathodic and anodic reactions were reported under the specified conditions. Such additives were found to greatly reduce the rate of reaction and for the weak inhibitors the extent of adsorption is enhanced in the presence of Cl − . In addition, the kinetic parameters and thermodynamic functions were evaluated using appropriate equations.