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Removal of chlorinated volatile organic compounds onto natural and Cu-modified zeolite: The role of chemical surface characteristics in the adsorption mechanism

Abstract : 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 comprised 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.
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https://hal.archives-ouvertes.fr/hal-03024978
Contributor : Frederic Thibault-Starzyk <>
Submitted on : Thursday, November 26, 2020 - 10:04:01 AM
Last modification on : Friday, November 27, 2020 - 3:00:48 AM

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Héctor Valdés, Andrés Riquelme, Víctor Solar, Federico Azzolina-Jury, Frederic Thibault-Starzyk. Removal of chlorinated volatile organic compounds onto natural and Cu-modified zeolite: The role of chemical surface characteristics in the adsorption mechanism. Separation and Purification Technology, Elsevier, 2021, 258, pp.118080. ⟨10.1016/j.seppur.2020.118080⟩. ⟨hal-03024978⟩

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