Observation of Adsorbed Hydrogen Species on Supported Metal Catalysts by Inelastic Neutron Scattering

2021 ◽  
Author(s):  
Hisao Yoshida ◽  
Akira Yamamoto ◽  
Saburo Hosokawa ◽  
Seiji Yamazoe ◽  
Soichi Kikkawa ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Metal Catalysts ◽  
Adsorbed Hydrogen ◽  
Supported Metal Catalysts ◽  
Supported Metal

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.

Anomalous vibrational modes in acetanilide as studied by inelastic neutron scattering

1992 ◽  
Vol 2 (10) ◽  
pp. 1929-1939 ◽  
Author(s):  
Mariette Barthes ◽  
Juegen Eckert ◽  
Susanna W. Johnson ◽  
Jacques Moret ◽  
Basil I. Swanson ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Vibrational Modes

Inelastic neutron scattering study of icosahedral AlFeCu quasicrystal

1992 ◽  
Vol 2 (2) ◽  
pp. 125-130 ◽  
Author(s):  
M. Quilichini ◽  
B. Hennion ◽  
G. Heger ◽  
S. Lefebvre ◽  
A. Quivy
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Scattering Study ◽  
Neutron Scattering Study

INELASTIC NEUTRON SCATTERING ON THE SPIN GLASS : PdMn 10 - at. %

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-918-C6-919 ◽  
Author(s):  
B. H. Verbeek ◽  
C. Van Dijk ◽  
C. J. Nieuwenhuys ◽  
J. A. Mydosh
Keyword(s):  
Neutron Scattering ◽  
Spin Glass ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron
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