کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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59120 | 1419438 | 2014 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nanowire accumulated Fe2O3/SiO2 spherical catalyst for Fischer-Tropsch synthesis Nanowire accumulated Fe2O3/SiO2 spherical catalyst for Fischer-Tropsch synthesis](/preview/png/59120.png)
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, N2-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 C2–C4 olefin/paraffin ratio was 3.3, which was higher than that of indus-FS at 1.9.
Graphical AbstractA Fe2O3/SiO2 catalyst consisting of a SiO2 nanowire architecture containing highly dispersed Fe2O3 was fabricated and used in Fischer-Tropsch synthesis. The catalyst exhibited a high light hydrocarbon selectivity and large olefin/paraffin ratio because of its open support structure and small supported Fe2O3 nanoparticles.Figure optionsDownload as PowerPoint slide
Journal: Chinese Journal of Catalysis - Volume 35, Issue 10, October 2014, Pages 1661–1668