, Volume 10, Issue 3, pp 219–225

A Study on the Adsorption of Benzotriazole on Copper in Hydrochloric Acid Using the Inflection Point of the Isotherm


  • E. Cano
    • CENIM-Centro Nacional de Investigaciones Metalúrgicas
  • J.L. Polo
    • Escuela de Ingeniería Técnica IndustrialUniversidad de Castilla-La Mancha
  • A. La Iglesia
    • Instituto de Geología Económica del CSICFacultad de Ciencias Geológicas, UCM
  • J.M. Bastidas
    • CENIM-Centro Nacional de Investigaciones Metalúrgicas

DOI: 10.1023/B:ADSO.0000046358.35572.4c

Cite this article as:
Cano, E., Polo, J., La Iglesia, A. et al. Adsorption (2004) 10: 219. doi:10.1023/B:ADSO.0000046358.35572.4c


This paper is a contribution to correlate benzotriazole (BTA) adsorption films on copper with BTA concentration in bulk solution with hydrochloric (HCl) acid. Three HCl concentrations were tested, 0.001, 0.005, and 0.01 M. Twelve BTA concentrations, from 1 × 10−5 to 1 × 10−1 M, were added to the HCl acid solution at four temperatures from 298 to 328 K. Commercial copper was used. Gravimetric measurements were performed after 3 h experimentation. The Frumkin isotherm gave the best fit to the experimental results. This result was based on the inflection point approach of the isotherm.

copperhydrochloric acidbenzotriazoleFrumkin and Damaskin-Parsons adsorption isotherms

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© Kluwer Academic Publishers 2004