Dr. Valdes-Morales, Hector

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Dr. Valdes-Morales, Hector
Nombre completo
Valdes Morales, Hector
Facultad
Email
hvaldes@ucsc.cl
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20211
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Subject: Chlorobenzene Ă—

Research Outputs

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    Publication
    Removal of chlorinated volatile organic compounds onto natural and Cu-modified zeolite: The role of chemical surface characteristics in the adsorption mechanism
    (Elsevier, 2021)
    Dr. Valdes-Morales, Hector 
    ;
    Riquelme-Díaz, Andrés
    ;
    Solar-SĂ¡ez, VĂ­ctor
    ;
    Azzolina-Jury, Federico
    ;
    Thibault-Starzyk, Frédéric
    In this study, the effect of chemical surface characteristics of natural and Cu-modified zeolite in the adsorption of chlorinated volatile organic compounds (VOCCls) was investigated using infrared spectroscopy. A natural zeolite mainly composed of clinoptilolite and mordenite was used as a parent material. A succession of chemical and thermal treatments produced a Cu-modified natural zeolite (NZ-Cu) with higher adsorption properties toward the elimination of VOCCls. The adsorption of VOCCls onto NZ-Cu zeolite could be explained by a surface mechanism that comprises the interaction not only with Brønsted acid sites present on the original natural zeolite framework; but also with new Brønsted acid sites formed after the successive treatments.