On the effect of water on the Fischer-Tropsch rate over a Co-based catalyst: The influence of the H2/CO ratio
2013 (English)In: Catalysis Today, ISSN 0920-5861, E-ISSN 1873-4308, Vol. 214, 25-29 p.Article in journal (Refereed) Published
The effect of water partial pressure on the Fischer-Tropsch (FT) rate of a cobalt catalyst supported on narrow-pore γ-Al2O3 was investigated at industrially relevant process conditions (483 K, 30 bar, pellet size: 53-90 μm). Inlet water partial pressure was varied up to 9 bar by external water vapour addition at different H2/CO molar ratios ranging from 1 to 3. The effect of water was found to be positive on FT-rate independently of the H2/CO ratio, but more significantly at H 2-poor condition. Temperature-programmed hydrogenation (TPH) was used to verify the presence of unreactive carbon species on the catalyst after 22 h on stream at the different conditions with and without exposure to about 9 bar water. A higher temperature feature that could be associated to amorphous polymeric carbon was detected at H2-poor conditions but remained unchanged upon 2 h of water exposure which did not result in a change in the amount of amorphous polymeric carbon detectable by TPH.
Place, publisher, year, edition, pages
2013. Vol. 214, 25-29 p.
Amorphous polymeric carbon, Fischer-Tropsch, H2/CO ratio, Water
Other Chemical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-102311DOI: 10.1016/j.cattod.2012.10.015ISI: 000322693300005ScopusID: 2-s2.0-84880328303OAI: oai:DiVA.org:kth-102311DiVA: diva2:552291
FunderSwedish Energy Agency
QC 20130819. Updated from submitted to published.2012-09-132012-09-132013-09-06Bibliographically approved