ZSM-5 supported iron catalysts for Fischer-Tropsch production of light olefin

被引:61
作者
Kang, Suk-Hwan [1 ]
Bae, Jong Wook [1 ]
Woo, Kwang-Jae [1 ]
Prasad, P. S. Sai [1 ]
Jun, Ki-Won [1 ]
机构
[1] Korea Res Inst Chem Technol, Adv Chem Technol Div, Taejon 305600, South Korea
关键词
Fischer-Tropsch Synthesis; Fe-based catalyst; ZSM-5; Olefin; ACTIVATION; KINETICS;
D O I
10.1016/j.fuproc.2009.05.023
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Fischer-Tropsch Synthesis (FTS) for olefin production from syngas was studied on Fe-Cu-K catalysts supported on ZSM-5 with three different Si/Al ratios. The catalysts were prepared by slurry-impregnation method of metallic components, and were characterized by BET surface area. XRD, hydrogen TPR and ammonia TPD. Fe-Cu-K/ZSM-5 catalyst with a low Si/Al ratio (25) is found to be superior to the other catalysts in terms of better C-2-C-4 selectivity in the FTS products and higher olefin/(olefin + paraffin) ratio in C-2-C-4 because of the facile formation of iron carbide during FTS reaction and also due to a larger number of weak acidic sites that are present in these catalysts. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:399 / 403
页数:5
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