Skip to content

Research at St Andrews

Hydrogen partitioning as a function of time-on-stream for an unpromoted iron-based Fischer-Tropsch synthesis catalyst applied to CO hydrogenation

Research output: Contribution to journalArticle

Author(s)

Alisha L. Davidson, Paul B. Webb, Stewart F. Parker, David Lennon

School/Research organisations

Abstract

Inelastic neutron scattering (INS) is employed to examine the evolution of a promoter-free iron-based Fischer-Tropsch synthesis catalyst (∼10 g catalyst charge) that is exposed to ambient pressure CO hydrogenation at 623 K for up to 10 days time-on-stream (T-o-S). The longer reaction time is selected to better understand how the formation of a previously described hydrocarbonaceous overlayer corresponds to the catalyst conditioning process. Although the onset of pseudo steady-state reactor performance is observed at approximately 9 h T-o-S, INS establishes that the intensity of the C-H stretching mode of the sp3-hybridized component of the hydrocarbonaceous overlayer saturates at about 24 h T-o-S, while the corresponding intensity of the C-H stretching mode of the sp2-hybridized component requires 100-200 h T-o-S to achieve saturation. This novel series of measurements reveal different aspects of the complex catalyst evolutionary process to be indirectly connected with catalytic turnover.

Close

Details

Original languageEnglish
Pages (from-to)52-60
JournalIndustrial and Engineering Chemistry Research
Volume59
Issue number1
Early online date9 Dec 2019
DOIs
Publication statusPublished - 8 Jan 2020

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. The application of quasi-elastic neutron scattering to investigate hydrogen diffusion in an iron-based Fischer-Tropsch synthesis catalyst

    Davidson, A. L., Webb, P. B., Silverwood, I. P. & Lennon, D., 7 Apr 2020, In : Topics in Catalysis. First Online, 8 p.

    Research output: Contribution to journalArticle

  2. The characteristics and biological relevance of inorganic amorphous calcium carbonate (ACC) precipitated from seawater

    Evans, D., Webb, P. B., Penkman, K., Kroger, R. & Allison, N., 7 Aug 2019, In : Crystal Growth & Design. 19, 8, p. 4300-4313

    Research output: Contribution to journalArticle

  3. Perspectives on the effect of sulfur on the hydrocarbonaceous overlayer on iron Fischer-Tropsch catalysts

    Warringham, R., Davidson, A. L., Webb, P. B., Tooze, R. P., Parker, S. F. & Lennon, D., 18 Feb 2019, In : Catalysis Today. In press

    Research output: Contribution to journalArticle

  4. Examining the temporal behavior of the hydrocarbonaceous overlayer on an iron based Fischer-Tropsch catalyst

    Warringham, R., Davidson, A. L., Webb, P. B., Tooze, R. P., Ewings, R. A., Parker, S. F. & Lennon, D., 23 Jan 2019, In : RSC Advances. 9, 5, p. 2608-2617 10 p.

    Research output: Contribution to journalArticle

  5. Strong substrate mediation of attractive lateral interactions of CO on Cu(110)

    Garrido Torres, J. A., Finley, K. L., Früchtl, H. A., Webb, P. B. & Schaub, R., 22 Jan 2019, In : Langmuir. 35, 3, p. 608–614 7 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Adsorption materials and processes for carbon capture from gas-fired power plants: AMPGas

    Gibson, J. A. A., Mangano, E., Shiko, E., Greenaway, A., Gromov, A. V., Lozinska, M. M., Friedrich, D., Campbell, E. E. B., Wright, P. A. & Brandani, S., 6 Apr 2016, In : Industrial & Engineering Chemistry Research. 55, 13, p. 3840–3851

    Research output: Contribution to journalArticle

ID: 265462881

Top