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Preparation and characterization of Pt-modified Co-based catalysts through the microemulsion technique: Preliminary results on the Fischer-Tropsch synthesis
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Technology.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Technology.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Technology.
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2014 (English)In: Catalysis Today, ISSN 0920-5861, E-ISSN 1873-4308, Vol. 223, p. 66-75Article in journal (Refereed) Published
Abstract [en]

The influence of the addition of small amounts of platinum (0.1-0.25% wt) to cobalt-based systems on Fischer-Tropsch synthesis was investigated. The solids were synthesized through microemulsion technique using TiO2 as the support. The best catalytic performance was achieved using Synperonic 13/6.5 as the surfactant. In all cases, the presence of platinum led to an increase in CO conversion which could be ascribed to the promotion of cobalt reducibility as evidenced by XPS. Moreover, the simultaneous reduction of cobalt and platinum precursors during synthetic procedure (ME1) was preferable to the consecutive one (ME2) probably as a result of a better Co-Pt interaction in the former case, as evidenced by TPR. TPR, Raman and XPS data also suggested that not only the presence of Co-0 but also the appearance of Co-TiO2 interactions favor the catalytic performance and that in general those interactions are stronger for ME1 solids.

Place, publisher, year, edition, pages
2014. Vol. 223, p. 66-75
Keywords [en]
Fischer-Tropsch synthesis, Microemulsion technique, Pt-modified cobalt catalysts, Co-TiO2 interaction
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-141282DOI: 10.1016/j.cattod.2013.11.053ISI: 000329980700009Scopus ID: 2-s2.0-84892818312OAI: oai:DiVA.org:kth-141282DiVA, id: diva2:696136
Note

QC 20140213

Available from: 2014-02-13 Created: 2014-02-13 Last updated: 2017-12-06Bibliographically approved

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