Synthesis and Characterization of Iron Oxide Nanoparticles Supported on Ziconia and Its Application in the Gas-Phase Oxidation of Cyclohexanol to Cyclohexanone

作     者：Mohammad Sadiq Gul Zamin Razia   Mohammad Ilyas 

作者机构：Department of Chemistry University of Malakand Chakdara Dir (L) Khyber Pakhtunkhwa Pakistan National Center of Excellence in Physical Chemistry University of Peshawar Khyber Pakhtunkhwa Pakistan 

出 版 物：《Modern Research in Catalysis》 (催化剂现代研究（英文）)

年 卷 期：2014年第3卷第1期

页      面：12-17页

学科分类：07[理学] 0703[理学-化学] 

主　　题：Iron Oxide Nanoparticles Magnetite Cyclohexanol 

摘      要：Iron oxide nanoparticles supported on zirconia were prepared by precipitation-deposition method and characterized by XRD, SEM, FT-IR, TGA/DTA, surface area and particle size analysis. Catalytic activities of the catalysts were tested in the gas-phase conversion of cyclohexanol in a fixed-bed flow type, Pyrex glass reactor, at 433 - 463 K. Major detected products were cyclohexanone, cyclohexene and benzene, depending on the used catalyst. The rate of reaction was significantly raised by the introduction of molecular oxygen in the feed gas, thereby suggesting the oxidation of cyclohexanol to cyclohexanone. Furthermore, the catalytic activity of iron oxide nanoparticles supported on zirconia treated with hydrogen at 553 K for 2 hours, was more selective and better than the unreduced iron oxide nanoparticles supported on zirconia, in the gas-phase oxidation of cyclohexanol to cyclohexanone. Experimental results showed that there was no leaching of metal, and that the catalyst was thus truly heterogeneous.