scholarly journals Examining the temporal behavior of the hydrocarbonaceous overlayer on an iron based Fischer–Tropsch catalyst

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2608-2617 ◽  
Author(s):  
Robbie Warringham ◽  
Alisha L. Davidson ◽  
Paul B. Webb ◽  
Robert P. Tooze ◽  
Russel A. Ewings ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Co Hydrogenation ◽  
Inelastic Neutron Scattering ◽  
Ambient Pressure ◽  
Inelastic Neutron ◽  
Tropsch Synthesis ◽  
Temporal Behavior ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Iron Based

Inelastic neutron scattering is used to examine an un-promoted iron based Fischer–Tropsch synthesis catalyst exposed to ambient pressure CO hydrogenation at 623 K for defined periods of time-on-stream (3, 6, 12 and 24 h).

scholarly journals The application of inelastic neutron scattering to investigate CO hydrogenation over an iron Fischer–Tropsch synthesis catalyst

2014 ◽  
Vol 312 ◽  
pp. 221-231 ◽  
Author(s):  
Neil G. Hamilton ◽  
Robbie Warringham ◽  
Ian P. Silverwood ◽  
Josef Kapitán ◽  
Lutz Hecht ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Co Hydrogenation ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

scholarly journals An Inelastic Neutron Scattering Investigation of the Temporal Behaviour of the Hydrocarbonaceous Overlayer of a Prototype Fischer-Tropsch to Olefins Catalyst

2021 ◽  
Author(s):  
Alisha L. Davidson ◽  
Paul B. Webb ◽  
Stewart F. Parker ◽  
David Lennon
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Ambient Pressure ◽  
Inelastic Neutron ◽  
Ex Situ ◽  
Adsorbed Hydrogen ◽  
Hydrogen Atoms ◽  
Fischer Tropsch ◽  
Temporal Behaviour ◽  
Temperature Programmed Oxidation

AbstractA dual sodium and sulfur promoted haematite, representative of a candidate Fischer-Tropsch to olefins (FTO) catalyst, is prepared and contrasted with the performance of an unpromoted hematite sample in the ambient pressure CO hydrogenation reaction at 623 K as a function of time-on-stream (0–24 h). In-situ post-reaction temperature-programmed oxidation measurements show the carbon evolutionary phase of the catalyst conditioning process to be retarded for the FTO catalyst. Ex-situ inelastic neutron scattering measurements show the promoters perturb the formation of a previously described hydrocarbonaceous overlayer. Specifically, whilst the sp3 hybridised C–H modes of the hydrocarbonaceous overlayer are almost unaffected by the additives, the formation of the overlayer’s sp2 hybridised C–H modes are noticeably impeded. The results are discussed in terms of the Na/S promoters disturbing the formation of an ordered hydrocarbonaceous overlayer that is thought to constrain the supply of adsorbed hydrogen atoms, which favours the formation of unsaturated hydrocarbons associated with the FTO process.

scholarly journals The application of inelastic neutron scattering to investigate iron-based Fischer-Tropsch to olefins catalysis

2020 ◽  
Vol 392 ◽  
pp. 197-208
Author(s):  
Alisha L. Davidson ◽  
Emma K. Gibson ◽  
Giannantonio Cibin ◽  
Hendrik van Rensburg ◽  
Stewart F. Parker ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Fischer Tropsch ◽  
Iron Based

Comparative Study of Iron-Based Fischer–Tropsch Synthesis Catalysts Promoted with Strontium or Potassium

2016 ◽  
Vol 146 (12) ◽  
pp. 2574-2584 ◽  
Author(s):  
Jifan Li ◽  
Xiaofan Cheng ◽  
Chenghua Zhang ◽  
Wensheng Dong ◽  
Yong Yang ◽  
...  
Keyword(s):  
Comparative Study ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Synthesis Catalysts ◽  
Iron Based
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