dc.contributor.author | Rytter, Erling | |
dc.contributor.author | Borg, Øyvind | |
dc.contributor.author | Tsakoumis, Nikolaos | |
dc.contributor.author | Holmen, Anders | |
dc.date.accessioned | 2020-12-28T12:07:45Z | |
dc.date.available | 2020-12-28T12:07:45Z | |
dc.date.created | 2018-10-01T10:59:48Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Journal of Catalysis. 2018, 365 334-343. | en_US |
dc.identifier.issn | 0021-9517 | |
dc.identifier.uri | https://hdl.handle.net/11250/2721015 | |
dc.description.abstract | Thirteen γ-alumina supports with different pore sizes and pore size distributions have been impregnated with cobalt and rhenium. The catalysts were tested for Fischer-Tropsch synthesis (FTS) under dry and enhanced water vapor pressure conditions. It is shown that there is a positive correlation between pore size and cobalt crystallite size of the reduced catalyst after incipient wetness impregnation as long as the pore size distribution is sufficiently narrow. There is a concurrent increase in C5+ with pore diameter due to higher chain propagation probabilities α3+. Higher α values are ascribed to larger cobalt crystallites that promote CO activation resulting in higher surface coverage of CHx monomers. Adding water vapor to the syngas feed has a strong positive effect on selectivity to higher hydrocarbons and activity. Water imposes a significant enhancement of α1 that is attributed to higher relative cobalt surface coverage of H2O(OH−) and CHx relative to hydrogen. Small pores are susceptible to condensation of water during FTS. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.subject | Water | en_US |
dc.subject | Alumina | en_US |
dc.subject | Cobalt | en_US |
dc.subject | Fischer-Tropsch | en_US |
dc.title | Water as key to activity and selectivity in Co Fischer-Tropsch synthesis: γ-alumina based structure-performance relationships | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | © 2018. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | en_US |
dc.source.pagenumber | 334-343 | en_US |
dc.source.volume | 365 | en_US |
dc.source.journal | Journal of Catalysis | en_US |
dc.identifier.doi | 10.1016/j.jcat.2018.07.003 | |
dc.identifier.cristin | 1616585 | |
cristin.unitcode | 7401,80,0,0 | |
cristin.unitname | SINTEF Industri | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |