DOI: https://doi.org/10.9767/bcrec.14.1.2519.35-41

Fischer-Tropsch Synthesis over Unpromoted Co/ɣ-Al2O3 Catalyst: Effect of Activation with CO Compared to H2 on Catalyst Performance

1Department of Chemical Engineering, Faculty of Engineering and the Built Environment, University of Johannesburg, Doornfontein 2028, South Africa

2Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Johannesburg, South Africa

Received: 9 Apr 2018; Revised: 21 Aug 2018; Accepted: 27 Aug 2018; Available online: 25 Jan 2019; Published: 15 Apr 2019.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2019 by Authors, Published by BCREC Group under http://creativecommons.org/licenses/by-sa/4.0.

Citation Format:
Cover Image
Abstract

The effect of activating Co/Al2O3 catalyst by diluted CO or H2 on catalyst performance for Fischer-Tropsch reaction was investigated. The catalyst was prepared by incipient wetness impregnation of the support and characterized using BET N2 physisorption, SEM, and XRD analyses. The reduction behavior of the catalyst in presence of CO and H2 individually was evaluated using TPR analyses. The data reveal that CO activates Co/Al2O3 catalyst at a lower temperature than H2 and produces a catalyst with higher rate for liquid product formation. It also leads to higher methane selectivity probably due to some cobalt carbide formation. 

Fulltext View|Download
Keywords: Co/Al2O3 catalyst; Fischer-Tropsch; Activation with CO.
Funding: South African National Research Foundation; University of Johannesburg

Article Metrics:

Article Info
Section: Original Research Articles
Language : EN
Recent articles
A Green Synthesis of Polylimonene Using Maghnite-H+, an Exchanged Montmorillonite Clay, as Eco-Catalyst Design of a Synthetic Zinc Oxide Catalyst over Nano-Alumina for Sulfur Removal by Air in a Batch Reactor Mesoporous Co3O4 as a New Catalyst for Allylic Oxidation of Cyclohexene Cymbopogon nardus Mediated Synthesis of Ag Nanoparticles for the Photocatalytic Degradation of 2,4-Dicholorophenoxyacetic Acid Intercalations and Characterization of Zinc/Aluminium Layered Double Hydroxide-Cinnamic Acid Microwave-assisted Synthesis of ZnO Nanoparticles Stabilized with Gum Arabic: Effect of Microwave Irradiation Time on ZnO Nanoparticles Size and Morphology Backmatter Frontmatter (Front Cover, Editorial Team, Indexing, and Table of Contents) Author Guideline (2019) More recent articles
  1. Steynberg, A.P. (2004). Introduction to fischer-tropsch technology. In Studies in Surface Science and Catalysis, 152: 1-63
  2. Zhang, Y., Wei, D., Hammache, S., Goodwin Jr, J.G. (1999). Effect of water vapor on the reduction of Ru-promoted Co/Al2O3. Journal of Catalysis, 188(2): 281-290
  3. Zsoldos, Z., Guczi, L. (1992). Structure and catalytic activity of alumina supported platinum-cobalt bimetallic catalysts. 3. Effect of treatment on the interface layer. The Journal of Physical Chemistry, 96(23): 9393-9400.
  4. Kogelbauer, A., Goodwin Jr, J.G., Oukaci, R. (1996). Ruthenium Promotion of Co/Al2O3 Fischer-Tropsch Catalysts. Journal of Catalysis, 160(1): 125-133
  5. Das, T.K., Jacobs, G., Patterson, P.M., Conner, W.A., Li, J., Davis, B.H. (2003). Fischer–Tropsch synthesis: characterization and catalytic properties of rhenium promoted cobalt alumina catalysts. Fuel, 82(7): 805-815
  6. Jalama, K., Coville, N.J., Xiong, H., Hildebrandt, D., Glasser, D., Taylor, S., Hutchings, G.J. (2011). A comparison of Au/Co/Al2O3 and Au/Co/SiO2 catalysts in the Fischer-Tropsch reaction. Applied Catalysis A: General, 395(1-2): 1-9
  7. Jalama, K., Kabuba, J., Xiong, H., Jewell, L. L. (2012). Co/TiO2 Fischer-Tropsch catalyst activation by synthesis gas. Catalysis Communications, 17: 154-159
  8. Jalama, K. (2016). Fischer–Tropsch synthesis over Co/TiO2 catalyst: Effect of catalyst activation by CO compared to H2. Catalysis Communications, 74: 71-74
  9. Pan, Z., Bukur, D.B. (2011). Fischer–Tropsch synthesis on Co/ZnO catalyst - Effect of pretreatment procedure. Applied Catalysis A: General, 404(1-2): 74-80
  10. Jacobs, G., Das, T.K., Zhang, Y., Li, J., Racoillet, G., Davis, B.H. (2002). Fischer–Tropsch synthesis: support, loading, and promoter effects on the reducibility of cobalt catalysts. Applied Catalysis A: General, 233(1-2): 263-281
  11. Liu, Y., Edouard, D., Nguyen, L.D., Begin, D., Nguyen, P., Pham, C., Pham-Huu, C. (2013). High performance structured platelet milli-reactor filled with supported cobalt open cell SiC foam catalyst for the Fischer–Tropsch synthesis. Chemical engineering journal, 222: 265-273
  12. Storsæter, S., Borg, Ø., Blekkan, E.A., Holmen, A. (2005). Study of the effect of water on Fischer–Tropsch synthesis over supported cobalt catalysts. Journal of Catalysis, 231(2): 405-419
  13. Borg, Ø., Eri, S., Blekkan, E.A., Storsæter, S., Wigum, H., Rytter, E., Holmen, A. (2007). Fischer–Tropsch synthesis over γ-alumina-supported cobalt catalysts: effect of support variables. Journal of Catalysis, 248(1): 89-100
  14. Ma, W., Jacobs, G., Ji, Y., Bhatelia, T., Bukur, D.B., Khalid, S., Davis, B.H. (2011). Fischer–Tropsch synthesis: Influence of CO conversion on selectivities, H2/CO usage ratios, and catalyst stability for a Ru promoted Co/Al2O3 catalyst using a slurry phase reactor. Topics in Catalysis, 54(13-15): 757
  15. Ma, W., Jacobs, G., Keogh, R.A., Bukur, D.B., Davis, B.H. (2012). Fischer–Tropsch synthesis: Effect of Pd, Pt, Re, and Ru noble metal promoters on the activity and selectivity of a 25% Co/Al2O3 catalyst. Applied Catalysis A: General, 437: 1-9
  16. Mohandas, J.C., Gnanamani, M.K., Jacobs, G., Ma, W., Ji, Y., Khalid, S., Davis, B.H. (2011). Fischer-Tropsch synthesis: characterization and reaction testing of cobalt carbide. ACS Catalysis, 1(11): 1581-1588
  17. Yang, J., Jacobs, G., Jermwongratanachai, T., Pendyala, V.R.R., Ma, W., Chen, D., Davis, B. H. (2014). Fischer-Tropsch synthesis: impact of H2 or CO activation on methane selectivity. Catalysis letters, 144(1): 123-132
  18. Ducreux, O., Rebours, B., Lynch, J., Roy-Auberger, M., Bazin, D. (2009). Microstructure of supported cobalt Fischer-Tropsch catalysts. Oil & Gas Science and Technology-Revue de l'IFP, 64(1): 49-62
  19. Karaca, H., Safonova, O.V., Chambrey, S., Fongarland, P., Roussel, P., Griboval-Constant, A., Khodakov, A.Y. (2011). Structure and catalytic performance of Pt-promoted alumina-supported cobalt catalysts under realistic conditions of Fischer–Tropsch synthesis. Journal of Catalysis, 277(1): 14-26
  20. Moyo, M., Motchelaho, M.A., Xiong, H., Jewell, L.L., Coville, N.J. (2012). Promotion of Co/carbon sphere Fischer–Tropsch catalysts by residual K and Mn from carbon oxidation by KMnO4. Applied Catalysis A: General, 413: 223-229

Last update:

No citation recorded.

Last update:

No citation recorded.