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Surface studies on graphite: Acidic surface oxides

✍ Scribed by S.S. Barton; G.L. Boulton; B.H. Harrison

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 402 KB
Volume: 10
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(72)90055-3

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✦ Synopsis

The extent of chemically detectable acidic surface oxides on graphite has been compared to the total coverage of the surface with oxide. Evolved .gas analysis techniques using a mass spectrometer have been used to determine the composition of the gases evolved (CO, CO,, Hz and H,O) on thermal decomposition of the surface species. The thermal stability of the acidic oxides neutralized by sodium hydroxide has been related to the oxide which on thermal decomposition yields CO,. It appears that a large fraction of the oxide surface, probably composed of carbonyl groups yielding CO on thermal decomposition, is neutral in character

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