The isotherm slope. A criterion for studying the adsorption mechanism of benzotriazole on copper in sulphuric acid

Authors

  • D. M. Bastidas School of Chemistry, University of St. Andrews
  • R. R. Gómez CENIM-National Centre for Metallurgical Research, CSIC
  • E. Cano CENIM-National Centre for Metallurgical Research, CSIC

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.i2.192

Keywords:

Cobre, ácido sulfúrico, benzotriazol, isoterma de adsorción, función objetivo, área molecular proyectada.

Abstract


The adsorption of benzotriazole (BTA) on copper surfaces in 0.001, 0.005 and 0.01 M concentrations of sulphuric acid was investigated using gravimetric measurements. BTA was tested in concentrations from 1x10-5 to 1x10-1 M at temperatures from 298 to 328 K. The adsorption mechanism is discussed in terms of applicability of the conventional Frumkin, Bockris-Swinkels and Kastening-Holleck isotherms, among others. The best fit was obtained using the Frumkin isotherm model. The projected molecular area of BTA was calculated to elucidate inhibitor orientation in the adsorption process

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Published

2005-04-30

How to Cite

Bastidas, D. M., Gómez, R. R., & Cano, E. (2005). The isotherm slope. A criterion for studying the adsorption mechanism of benzotriazole on copper in sulphuric acid. Revista De Metalurgia, 41(2), 98–106. https://doi.org/10.3989/revmetalm.2005.v41.i2.192

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Articles