Cobalt and iron supported on carbon nanofibers as catalysts for Fischer-Tropsch synthesis

被引:48
作者
Antonio Diaz, Jose [1 ]
Akhavan, Hasti [2 ,3 ]
Romero, Amaya [4 ]
Maria Garcia-Minguillan, Alba [1 ]
Romero, Rubi [5 ]
Giroir-Fendler, A. [2 ,3 ]
Luis Valverde, Jose [1 ]
机构
[1] Univ Castilla La Mancha, Fac Ciencias & Tecnol Quim, Dept Ingn Quim, E-13071 Ciudad Real, Spain
[2] Univ Lyon 1, F-69622 Villeurbanne, France
[3] IRCELYON, CNRS, UMR 5256, F-69622 Villeurbanne, France
[4] Univ Castilla La Mancha, Escuela Ingenieros Agran, E-13071 Ciudad Real, Spain
[5] UAEMex UNAM, Ctr Conjunto Invest Quim Sustentable, Toluca 50200, Mexico
关键词
Fischer-Tropsch; Carbon nanofibers; Cobalt; Iron; Bimetallic catalysts; GAS-PHASE HYDROGENATION; BIMETALLIC CATALYSTS; PLATINUM CATALYSTS; CO; CINNAMALDEHYDE;
D O I
10.1016/j.fuproc.2014.08.005
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Cobalt and/or iron supported on carbon nanofibers were prepared and used as monometallic or bimetallic catalysts for Fischer-Tropsch synthesis at 523 K and 20 bar. Catalysts were characterized by ICP, N-2 adsorption-desorption, TPR, XRD and XPS. Characterization results revealed that cobalt and iron had a synergetic effect: cobalt particles were better dispersed in presence of iron, and the latter was reduced to Fe in a higher extent due to the presence of the former. Catalytic results revealed that cobalt content played an important role in the catalytic conversion of CO. This way, the higher the content in cobalt, the higher the CO conversions were observed. Thus, sample 15Co/CNF presented the highest CO conversion. However, the presence of iron in bimetallic catalysts avoided an excessive production of CH4. The bimetallic sample with the highest Co loading (10Co5Fe/CNF) was the most active catalyst for the FTS reaction, because it led to the highest yield of longchained hydrocarbons. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:417 / 424
页数:8
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