Nanowire accumulated Fe2O3/SiO2 spherical catalyst for Fischer-Tropsch synthesis

作者：Chen Lifeng; Song Weilin; Zhang Yahong; Yang Weimin; Wu Lianghua; Tang Yi^*

来源：Chinese Journal of Catalysis, 2014, 35(10): 1661-1668.

DOI：10.1016/S1872-2067(14)60135-2

• Nanowire
• Nanometal catalyst
• Fischer-Tropsch synthesis
• Coal chemistry
• Secondary reaction

A catalyst consisting of SiO2 nanowires and highly dispersed Fe2O3 (denoted NW-FS) was synthesized in situ by iron-assisted amine-vapor-transport treatment. NW-FS was prepared by the direct transformation of an industrial spherical Fe2O3/SiO2 catalyst (denoted indus-FS). NW-FS was characterized by scanning electron microscopy, X-ray diffraction, transmission electron microscopy, N-2-sorption measurements, X-ray photoelectron spectroscopy, and temperature-programmed reduction. NW-FS exhibited a high selectivity for light olefins, especially for ethene in the Fischer-Tropsch synthesis. This was because of the highly dispersed Fe2O3 and low diffusion resistance of its open structure. The C-2-C-4 olefin/paraffin ratio was 3.3, which was higher than that of indus-FS at 1.9.

• 出版日期2014-10
• 单位复旦大学; 中国石油化工股份有限公司上海石油化工研究院