Vapour phase deep oxidation of chlorinated hydrocarbons catalyzed by pillared bentonites

✍ Scribed by Loretta Storaro; Renzo Ganzerla; Maurizio Lenarda; Roberto Zanoni

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 535 KB
• Volume: 97
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/1381-1169(94)00083-2

✦ Synopsis

A natural sodium bentonite was pillared with aluminum, aluminum-iron, aluminum-ruthenium and aluminum-chromium polyoxocations. The clays were characterized by X-ray diffraction, ESCA and nitrogen adsorption. All the clays resulted to varying degrees in active catalyst for the deep oxidation of volatile chlorinated hydrocarbons (CVOCs) in the 300400°C temperature range. The chromium pillared clay was by far the most active and stable catalyst, with more than 99% hydrocarbon conversion at 300°C. The catalytic activity trend is discussed as a function of the Brensted acidity and of the oxidizing power of the metallic couple.