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Fe2O3 nanoparticles encapsulated in TiO2 nanotubes for Fischer-Tropsch synthesis: The confinement effect of nanotubes on the catalytic performance

By Wenbo Wang, Mingyue Ding, Longlong Ma, Xu Yang, Juan Li, Noritatsu Tsubaki, Guohui Yang, Tiejun Wang and Xinjun Li


The catalysts with high activity and selectivity, especially the latter, play a key role in Fischer-Tropsch synthesis technology. Herein, a novel Fe-based confinement catalyst, Fe2O3 encapsulated in TiO2 nanotubes, was prepared by a method of vacuum-assisted impregnation. The catalyst presented an excellent yield of oil phase hydrocarbons and C5+ selectivity due to the confinement effect. This interesting phenomenon was discussed from the view of the restrained molecular movement and enhanced readsorption of short-chain alpha-olefins in the confined space of TiO2 nanotube channels. The results over this novel confinement catalyst revealed a promising research prospect on adjusting the product distribution to long-chain hydrocarbons for Fe-based Fischer-Tropsch catalyst. (C) 2015 Elsevier Ltd. All rights reserved

Topics: Confinement Effect, Tio2 Nanotube, Fischer-tropsch Synthesis, Iron-based Catalysts, Elongation Of Carbon Chain, Science & Technology, Technology, Energy & Fuels, Engineering, CARBON NANOTUBES, LOWER OLEFINS, SELECTIVITY, MECHANISM, Energy & Fuels, Engineering, Chemical
Year: 2016
DOI identifier: 10.1016/j.fuel.2015.09.089
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