Ion Cyclotron Resonance Study of CO Oxidation in the Gas Phase in the Presence of Rhenium Cations with Carbonyl and Oxygen Ligands. Comparison with Heterogeneous Catalysis
Review
| Общее |
Language:
Английский,
Genre:
Review,
Status:
Published,
Source type:
Original
|
| Journal |
Catalysis Letters
ISSN: 1011-372X
, E-ISSN: 1572-879X
|
| Output data |
Year: 1996,
Volume: 41,
Number: 1,2,
Pages: 7-11
Pages count
: 5
DOI:
10.1007/BF00811704
|
| Tags |
Carbon monoxide, Catalytic gas-phase CO oxidation, Fourier transform ion cyclotron resonance spectrometry, Rhenium ion carbonyls, Rhenium ion oxides |
| Authors |
Fialko E.F.
1
,
Kikhtenko A.V.
1
,
Goncharov V.B.
1
,
Zamaraev K.I.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis
|
|
Funding (1)
|
1
|
International Science Foundation
|
RBG 300
|
Gas-phase oxidation of CO in the presence of rhenium cations with carbonyl and oxygen ligands has been studied by Fourier transform ion cyclotron resonance (FT-ICR) spectrometry. Rhenium cations have been generated by the electron impact of Re2(CO)10 vapour. Contrary to the unreactive rhenium ions, rhenium monocarbonyi ions have been found to react with O2 molecules yielding rhenium monoxide ions and CO2 molecules. ReO+ ions are subsequently oxidized with O2 to di- and trioxide ions. The bond energies in rhenium oxide ions were estimated as D°(Re+−O)=104±14, D°(ReO+−O)<118, D°ReO2+−O)=122±4 kcal/mol. Simultaneous addition of CO and O2 molecules to the reaction volume leads to the gas-phase catalytic oxidation of CO with pairs of rhenium oxide ions ReO3+/ReO2+ serving as the oxidized and reduced forms of the catalyst. The mechanisms of the above reactions are discussed in connection with that for oxidation of CO over solid oxide catalysts.