Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (10): 1661-1668.DOI: 10.1016/S1872-2067(14)60135-2

• Articles • Previous Articles     Next Articles

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

Lifeng Chena, Weilin Songa,b, Yahong Zhanga, Weimin Yangb, Lianghua Wub, Yi Tanga   

  1. a Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis, Fudan University, Shanghai 200433, China;
    b Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China
  • Received:2014-03-17 Revised:2014-04-08 Online:2014-09-28 Published:2014-09-30
  • Supported by:

    This work was supported by the National Basic Research Program of China (973 Program, 2013CB934101) and the Science and Technology Commission of Shanghai Municipality (11JC1400400).

Abstract:

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.

Key words: Nanowire, Nanometal catalyst, Fischer-Tropsch synthesis, Coal chemistry, Secondary reaction