Estudio de la adsorción de aniones sobre zeolitas sintéticas modificadas con surfactantes

Carlos Villavicencio, Aurora Molina, Lenys Fernández

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)


This work concerns the study of the synthesis of zeolites under hydrothermal conditions in an alkaline medium, using, as raw material, kaolin previously selected from various aluminosilicates from Venezuela and which was heated for 1.5 hours at a temperature of 700°C. The optimization of the synthesis was conducted by varying parameters such as concentration of NaOH 2.0 M, temperature and time of crystallization at 90°C for 3 hours. For purposes of comparison, we carried out the synthesis of pure zeolite A, according to the procedure of the International Association of Zeolites (IZA). All products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), elemental chemical analysis by emission spectroscopy (ICP-AES) and infrared spectroscopy (FT-IR). On the other hand, the applications of zeolite films synthesized in these conditions saturated with calcium and modified by surfactants named cetyltrimethylamonium bromide (CTAB) and non-ionic named Triton X-100, for the subsequent modification of the glassy carbon electrode surface (GC) in the detection by oxidation of phenolic compounds, by cyclic voltammetry, showed improvements in the voltammetric response to pH 9.2 and 9.6 compared with that of the unaltered glassy carbon, attributed to the effects of the surfactants and pH on the surface of the zeolite.

Título traducido de la contribuciónStudy of anion adsorption on modified synthetic zeolites with surfactant
Idioma originalEspañol
Páginas (desde-hasta)95-107
Número de páginas13
PublicaciónRevista de la Facultad de Ingenieria
EstadoPublicada - sep. 2009
Publicado de forma externa

Palabras clave

  • Cyclic voltammetry
  • Detection
  • Electrochemical sensing
  • Hydrothermal treatment
  • Kaolin
  • Surface modification
  • Surfactant
  • Synthesis
  • Zeolite
  • Zeolite modified electrodes


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