Surface studies of carbon: Acidic oxides on spheron 6

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

• Publisher: Elsevier Science
• Year: 1973
• Tongue: English
• Weight: 609 KB
• Volume: 11
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(73)90332-1

✦ Synopsis

Surface oxygen complexes on Spheron 6, which thermally desorb as CQ, appear to be responsible for the acidity of the carbon. The base uptake of samples degassed at various temperatures has been related to the amounts of oxygen complex remaining on the surface. Two types of acidic oxides, both of which desorbed as C02, were observed. At temperatures around 250°C an oxide which acts as a very weak monobasic acid is decomposed and at about 600°C a second oxide, which is stronger and dibasic is decomposed. The heat of neutralization of this second acid was found to be approximately 12 kcal-mole-r.