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The structure of acidic surface oxides on carbon and graphite—II

✍ Scribed by S.S. Barton; D.J. Gillespie; B.H. Harrison; W. kemp

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
317 KB
Volume
16
Category
Article
ISSN
0008-6223

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✦ Synopsis

Diazomethane has been used to methylate the "active" hydrogen associated with acidic oxides on carbon and graphite surfaces. Analysis of the methoxyl groups so formed showed that the active hydrogen was present as an OH group and that the total active hydrogen content of both carbon and graphite degassed at temperatures up to 8OfPC was very close to the uptake of 0.05 N sodium hydroxide. Studies on the carbon black Spheron 6 showed that the acidic oxide decomposing at about 250°C was not methylated by diazomethane but the group decomposing around 600°C was rapidly methvlated. In addition a group decomposing at 4O&SOO"C was round to be siowlyTmethylated by diazomeihane.

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