Barrientos, J;
Garcilaso, V;
Venezia, B;
Aho, A;
Odriozola, JA;
Boutonnet, M;
Järås, S;
(2017)
Fischer–Tropsch Synthesis Over Zr-Promoted Co/γ-Al2O3 Catalysts.
Topics in Catalysis
, 60
pp. 1285-1298.
10.1007/s11244-017-0813-1.
Preview |
Text
Barrientos2017_Article_FischerTropschSynthesisOverZr-.pdf - Published Version Download (1MB) | Preview |
Abstract
Two Zr-modified alumina supports were synthetized containing the same amount of Zr but a different distribution of this modifier over the alumina surface. These supports, together with the unmodified alumina carrier, were used to prepare three cobalt-based catalysts which were characterized and tested under relevant Fischer–Tropsch conditions. The three catalysts presented very similar porosity and cobalt dispersion. The addition of Zr nor its distribution enhanced the catalyst reducibility. The catalyst activity was superior when using a carrier consisting of large ZrO2 islands over the alumina surface. The use of a carrier with a homogeneous Zr distribution had however, a detrimental effect. Moreover, a faster initial deactivation rate was observed for the Zr-promoted catalysts, fact that may explain this contradictory effect of Zr on activity. Finally, the addition of Zr showed a clear enhancement of the selectivity to long chain hydrocarbons and ethylene, especially when Zr was well dispersed.
| Type: | Article |
|---|---|
| Title: | Fischer–Tropsch Synthesis Over Zr-Promoted Co/γ-Al2O3 Catalysts |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s11244-017-0813-1 |
| Publisher version: | http://dx.doi.org/10.1007/s11244-017-0813-1 |
| Language: | English |
| Additional information: | Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
| Keywords: | Fischer–Tropsch synthesis, Co/Al2O3, Cobalt, Zr, Activity |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10092888 |
Archive Staff Only
 |
View Item |
