Investigation of mixtures of a Co-based catalyst and a Cu-based catalyst for the fischer-tropsch synthesis with Bio-Syngas: The importance of indigenous water
2011 (English)In: Topics in catalysis, ISSN 1022-5528, E-ISSN 1572-9028, Vol. 54, no 13-15, 977-985 p.Article in journal (Refereed) Published
A series of different mechanical mixtures of a narrow-pore Co/γ-Al2O3 catalyst and a Cu-based WGScatalyst has been investigated in the low-temperature Fischer-Tropsch synthesis (483 K, 20 bar) with a model bio-syngas (H2/CO = 1.0) in a fixed-bed reactor. The higher the fraction of WGS-catalyst in the mixture, the lower is the Co-catalyst-time yield to hydrocarbons. This is ascribed to a strong positive kinetic effect of water on the Fischer-Tropsch rate of the Co-catalyst, showing the importance of the indigenously produced water, especially in fixed-bed reactors where the partial pressure of water is zero at the reactor inlet. A preliminary kinetic modeling suggests that the reaction order in PH2O is 0.3 for the Co/γ-Al2O3 catalyst in the range of the studied reactor-average partial pressures of water (i.e., 0.04-1.2 bar).
Place, publisher, year, edition, pages
Springer-Verlag New York, 2011. Vol. 54, no 13-15, 977-985 p.
Alumina, Cobalt, Copper, Fischer-Tropsch, Water effect, Water-gas shift
Other Chemical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-84740DOI: 10.1007/s11244-011-9719-5ISI: 000300179100025ScopusID: 2-s2.0-80055060815OAI: oai:DiVA.org:kth-84740DiVA: diva2:499594
QC 201202152012-02-132012-02-132012-09-14Bibliographically approved