Effect of K promoter on the structure and catalytic behavior of supported iron-based catalysts in fischer-tropsch synthesis

Brazilian Journal of Chemical Engineering

F. E. M Farias²  R. C Rabelo Neto¹  M. A. S Baldanza¹  M Schmal¹  F. A. N Fernandes² 

[1] ,Universidade Federal do Ceará Departamento de Engenharia Química Fortaleza CE ,Brasil

关键词: Fischer-Tropsch synthesis;    Hydrocarbons;    Iron catalyst;    Slurry reactor;   

DOI  :  10.1590/S0104-66322011000300015

来源: SciELO

【 摘 要 】

Effects of K addition on the performance of supported Fe catalysts for Fischer - Tropsch synthesis (FTS) were studied in a slurry reactor at 240 to 270ºC, 2.0 to 4.0 MPa and syngas H2/CO = 1.0. The catalysts were characterized by N2 adsorption, H2 temperature programmed reduction, X - ray diffraction, X - ray fluorescence, thermogravimetric analysis, scanning electron microscopy and dispersive X - ray spectroscopy. A strong interaction was observed between Fe and K, which inhibited the reduction of Fe catalyst. Addition of potassium increased the production of heavy hydrocarbons (C20+).

【 授权许可】

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