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Effects of manganese and reduction promoters on carbon nanotube supported cobalt catalysts in Fischer–Tropsch synthesis

Title data

Thiessen, Johannes ; Rose, Amadeus ; Meyer, J. ; Jess, Andreas ; Curulla-Ferré, Daniel:
Effects of manganese and reduction promoters on carbon nanotube supported cobalt catalysts in Fischer–Tropsch synthesis.
In: Microporous and Mesoporous Materials. Vol. 164 (2012) . - pp. 199-206.
ISSN 1387-1811
DOI: https://doi.org/10.1016/j.micromeso.2012.05.013

Official URL: Volltext

Abstract in another language

Carbon nanotube (CNT) supported Co catalysts were promoted with manganese and noble metals (Pt, Ru) and tested in Fischer–Tropsch synthesis at temperatures between 200 and 250 °C and pressures of 1 and 30 bar. A significant decrease in methane selectivity and with that an increase in C5+ selectivity was found due to promotion with manganese. In addition, the activity (syngas conversion) slightly increases and the olefin selectivity drastically increases. The promotion with noble metals (Pt, Ru) resulted in a higher degree of catalyst reduction, yet otherwise only had small effects. The double promotion of Co with Mn and Pt or Ru lead to a higher activity and activation energy in the case of Pt, and in both cases to a lower olefin selectivity compared to the catalyst promoted with manganese only. For a Mn promoted and an unpromoted Co/CNT catalyst, an increase of total pressure from 1 to 30 bar leads to a lower methane selectivity and higher chain growth probability. The rate of syngas consumption was found to be very similar at 30 bar compared to 1 bar.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Fischer-Tropsch
Cobalt
Manganese
Reduction promoters
Carbon nanotubes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 22 Jan 2015 07:12
Last Modified: 10 Feb 2015 12:11
URI: https://eref.uni-bayreuth.de/id/eprint/5745