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| 2. |
- Talyzin, Alexandr, et al.
(författare)
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Reaction of hydrogen gas with C60 at elevated pressure and temperature: Hydrogenation and cage fragmentation.
- 2006
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Ingår i: Journal of Physical Chemistry A. - : American Chemical Society (ACS). - 1089-5639 .- 1520-5215. ; 110:27, s. 8528-34
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Tidskriftsartikel (refereegranskat)abstract
- Products of the reaction of C60 with H2 gas have been monitored by high-resolution atmospheric pressurephotoionization Fourier transform ion cyclotron resonance mass spectrometry (APPI FT-ICR MS), X-raydiffraction, and IR spectroscopy as a function of hydrogenation period. Samples were synthesized at 673 Kand 120 bar hydrogen pressure for hydrogenation periods between 300 and 5000 min, resulting in the formationof hydrofullerene mixtures with hydrogen content ranging from 1.6 to 5.3 wt %. Highly reduced C60Hx (x >36-40) and products of their fragmentation were identified in these samples by APPI FT-ICR MS. A sharpchange in structure was observed for samples with at least 5.0 wt % of hydrogen. Low-mass (300-500 Da)hydrogenation products not observed by prior field desorption (FD) FT-ICR MS were detected by APPIFT-ICR MS and their elemental compositions obtained for the first time. Synthetic and analytical fragmentationpathways are discussed.
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| 3. |
- Talyzin, Alexander V., et al.
(författare)
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Composition of hydrofullerene mixtures produced by C60 reaction with hydrogen gas revealed by high-resolution mass spectrometry.
- 2005
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Ingår i: Journal of Physical Chemistry B. - : American Chemical Society (ACS). - 1520-6106 .- 1520-5207. ; 109:26, s. 12742-12747
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Tidskriftsartikel (refereegranskat)abstract
- Complex solid hydrofulleride mixtures were synthesized by prolonged hydrogenation of C60 at 120 bar hydrogen pressure, 673 K temperature, and different reaction periods. The high degree of hydrogenation was confirmed by infrared spectroscopy and X-ray diffraction. The identity of hydrogenation products was determined by high-resolution field desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry. Despite partial gas-phase fragmentation of hydrofullerene ions during mass analysis, the data suggest that the synthesized mixtures consist of mostly C58-60Hx hydrofullerenes. Increasing the duration of hydrogenation results in synthesis of C59Hx and C58Hx as major products. Possible hydrofullerene fragmentation pathways during both material synthesis and mass spectrometric analysis are discussed. Gas-phase fragmentation in the mass spectrometer arises from hydrofullerene ions C60Hx+ with x > 40 and C59H44+ with drastically decreased molecular stability relative to the known C60H36.
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| 4. |
- Aad, G., et al.
(författare)
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- 2012
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swepub:Mat__t (refereegranskat)
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| 5. |
- Aad, G., et al.
(författare)
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- 2012
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swepub:Mat__t (refereegranskat)
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| 6. |
- Aad, G., et al.
(författare)
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- 2012
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swepub:Mat__t (refereegranskat)
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| 7. |
- Aad, G., et al.
(författare)
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- 2012
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swepub:Mat__t (refereegranskat)
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| 8. |
- Aad, G., et al.
(författare)
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- 2013
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swepub:Mat__t (refereegranskat)
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| 9. |
- Aad, G., et al.
(författare)
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- 2012
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swepub:Mat__t (refereegranskat)
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| 10. |
- Aad, G., et al.
(författare)
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- 2012
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swepub:Mat__t (refereegranskat)
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