Effect of tolyltriazole on iron corrosion and the hydrogen evolution reaction in H/sub 2/SO/sub 4/

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/0010-9312-32.6.238· OSTI ID:6739390

Eldakar, N; Nobe, K

The effect of tolyltriazole on the corrosion behavior of iron in sulfuric acid has been examined. The rate of hydrogen evolution on iron in the absence and presence of tolyltriazole was first order with respect to the hydrogen ion concentration. The experimental results indicate that the presence of adsorbed tolyltriazole on iron does not affect the mechanism of hydrogen evolution as also had been observed previously for benzotriazole. The corrosion rate of iron decreased as the concentration of tolyltriazole increased. After a concentration of about 4.7 millimolar tolyltriazole, the corrosion rate of iron did not appear to decrease with further increase in inhibitor concentration. The presence of 4.7 millimolar tolytriazole decreased the corrosion rate to 0.26 mA/sq cm compared to 0.7 mA/sq cm for uninhibited iron. The adsorption of tolytriazole on iron in H/sub 2/SO/sub 4/ followed Langmuir adsorption behavior. (12 refs.)

• Research Organization: Calif Univ, Los Angeles
• OSTI ID: 6739390
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 32:6; ISSN CORRA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ADSORPTION
AZOLES
CHEMICAL REACTIONS
CORROSION
CORROSION INHIBITORS
ELEMENTS
HETEROCYCLIC COMPOUNDS
IRON
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SORPTION
TESTING
TRANSITION ELEMENTS
TRIAZOLES