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- Title
Spectrum of Gases Liberated upon the Stepwise Heating of Single-Walled Carbon Nanotubes Deuterated under Pressure.
- Authors
Shulga, Yu. M.; Bashkin, I. O.; Krestinin, A. V.; Martynenko, V. M.; Zvereva, G. I.; Kondratieva, I. V.; Ossipyan, Yu. A.; Ponyatovsky, E. G.
- Abstract
The mass spectra of gases liberated from single-walled carbon nanotubes saturated with deuterium under a pressure of 5 GPa at temperatures up to 500°C (10.8 wt % D) have been measured at different steps of heating to 550°C in a vacuum. Hydrocarbons were found to dominate in the spectra at temperatures up to 400°C, whereas the D2 and HD molecules became the main components of the spectra at 500–550°C. Changes in the spectra with temperature are consistent with the hypothesis that the major portion of hydrogen in the single-walled carbon nanotubes hydrogenated under pressure and reverted to normal conditions was present in the molecular form. The low temperatures of the hydrocarbon liberation are indicative of lower kinetic barriers in the reaction paths of the hydrocarbon liberation as compared with the liberation of D2 molecules. Spectral-peak-shape analysis demonstrates the high hydrophilicity of hydrogenated single-walled carbon nanotubes, whereas the sorption of atmospheric oxygen is insignificant as compared with the sorption of water. © 2004 MAIK “Nauka/Interperiodica”.
- Subjects
GAS spectra; NANOTUBES; CARBON; DEUTERIUM; HYDROGEN isotopes; GASES at high temperatures; MASS spectrometry
- Publication
JETP Letters, 2004, Vol 80, Issue 12, p752
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1868800