Removal of Toluene over NaX Zeolite Exchanged with Cu2+

Catalysts

Douglas Romero³  Dayan Chlala³  Madona Labaki⁴  Sstien Royer¹  Jean-Pierre Bellat²  Igor Bezverkhyy²  Jean-Marc Giraudon³  Jean-François Lamonier³ 

[1] Institut de Chimie des Milieux et Matériaux de Poitiers UMR 7285 CNRS, Université Poitiers, 86073 Poitiers, France; E-Mail:;Laboratoire Interdisciplinaire Carnot de Bourgogne UMR 6303 CNRS, Université Bourgogne, 21078 Dijon, France; E-Mails:;Unité de Catalyse et de Chimie du Solide UMR 8181 CNRS, Université Lille1 Sciences et Technologies, 59650 Villeneuve d’Ascq, France; E-Mails:;Laboratory of Physical Chemistry of Materials/PR2N, Faculty of Sciences, Lebanese University, Fanar, Lebanon; E-Mail:

关键词: VOC;    toluene;    catalytic oxidation;    adsorption;    zeolite;    copper;   

DOI  :  10.3390/catal5031479

来源: mdpi

【 摘 要 】

Toluene is a major air pollutant emitted from painting and metal coating processes and might have some health effects. Adsorption and catalytic complete oxidation are promising ways to retain or convert toluene into harmless products. The present work aims to develop a bifunctional material which can be used as an adsorbent and catalyst for low-temperature toluene removal. Copper zeolites were obtained by exchanging the sodium in the parent NaX zeolite with copper from aqueous solutions of Cu(NO₃)₂∙2.5H₂O. Several characterization techniques, H₂-TPR, XPS, XRD and N₂ physisorption, were used in order to evaluate the redox, surface, structural and textural properties of the materials, respectively. The various materials were tested in adsorption and catalytic processes. The sample with low copper content (1 wt. %) exhibited promising features in terms of toluene adsorption capacity and total oxidation. The results can be correlated to the presence of micropores and well-dispersed CuO species.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.