title: Enhanced catalytic complete oxidation of 1,2-dichloroethane over mesoporous transition metal-doped γ-Al2O3.
abstract: High-surface-area mesoprous powders of γ-Al2O3 doped with Cu2+, Cr3+, and V3+ ions were prepared via a modified sol-gel method and were investigated as catalysts for the oxidation of chlorinated organic compounds. The composites retained high surface areas and pore volumes comparable with those of undoped γ-Al2O3 and the presence of the transition metal ions enhanced their surface acidic properties. The catalytic activity of the prepared catalysts in the oxidation of 1,2-dichloroethane (DCE) was studied in the temperature range of 250-400°C. The catalytic activity and product selectivity were strongly dependent on the presence and the type of dopant ion. While Cu2+- and Cr3+-containing catalysts showed 100% conversion at 300°C and 350°C, V3+-containing catalyst showed considerably lower conversion. Furthermore, while the major products of the reactions over γ-alumina were vinyl chloride (C2H3Cl) and hydrogen chloride (HCl) at all temperatures, Cu- and Cr-doped catalysts showed significantly stronger capability for deep oxidation to CO2.
authors.affiliation: Department of Chemistry, United Arab Emirates University, P.O. Box 17551, Al-Ain, Abu Dhabi, United Arab Emirates. Electronic address: abbask@uaeu.ac.ae.
authors.forename: Abbas
authors.initials: A
authors.lastname: Khaleel
authors.affiliation: Department of Chemistry, United Arab Emirates University, P.O. Box 17551, Al-Ain, Abu Dhabi, United Arab Emirates.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Nawaz
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D002384:Catalysis; D005025:Ethylene Dichlorides / Q000737:chemistry*; D008670:Metals / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D005025:Ethylene Dichlorides; D008670:Metals; D014874:Water Pollutants, Chemical; C024565:ethylene dichloride; D000537:Aluminum Oxide
keywords: Catalytic oxidation; Chlorinated organic compounds; Mixed metal oxides; Sol–gel method