Related Experiment Video
Updated: May 19, 2026

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
Published on: August 17, 2019
BTX abatement using Chilean natural zeolite: the role of Brønsted acid sites
S Alejandro1, H Valdés, M-H Manero
1Universidad Católica de la Santísima Concepción, Concepción, Chile.
Abstract:
In wastewater treatment facilities, air quality is not only affected by conventional unpleasant odour compounds; toxic volatile organic compounds (VOCs) are also found. In this study, the adsorptive capacity of Chilean natural zeolite toward VOC removal was evaluated. Moreover, the influence of zeolite chemical surface properties on VOC elimination was also investigated. Three modified zeolite samples were prepared from a natural Chilean zeolite (53% clinoptilolite, 40% mordenite and 7% quartz). Natural and modified zeolite samples were characterised by nitrogen adsorption at 77 K, elemental analyses and X-ray fluorescence (XRF). Chemical modifications of natural zeolite showed the important role of Brønsted acid sites on the abatement of VOCs. The presence of humidity has a negative effect on zeolite adsorption capacity. Natural zeolites could be an interesting option for benzene, toluene and xylene vapour emission abatement.
Related Concept Videos
α-Bromination of Carboxylic Acids: Hell–Volhard–Zelinski Reaction
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene
Nucleophilic Aromatic Substitution: Elimination–Addition
Brønsted-Lowry Acids and Bases
Electrophilic Addition to Alkynes: Hydrohalogenation
Lewis Acids and Bases
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...

