120. A study of the electrical resistivity of the oxidation products of graphite

✍ Scribed by A Martin-Rodriguez; J.D Lopez-Gonzalez; E.Fernandez Duran; G.Pardo Sanchez

• Publisher: Elsevier Science
• Year: 1973
• Tongue: English
• Weight: 129 KB
• Volume: 11
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(73)90456-9

✦ Synopsis

ABSTRACTS

tion pressure of C& is determined therefrom, and thermochemical data of the system are obtained. An interpretation is given to the hysteresis phenomena observed in the sorption-desorption cycle of the system.

116. A. Magnetic and gravimetric study of the kinetics of the first intercalation of bromine into a

Pyro=bon A. Marchand, J_ C. Rouillon and M. H. de Macuzo (Cent7e de Recherc~s Paul Pascal, Dads Univer-sit&e, 33 Talewe, Frunce). Identical platelets of pyrocarbon were each submitted to a single sorption and desorption at various temperatures (2035°C) and bromine pressures . Changes of weight and diamagnetic anisotropy were measured in situ as a function of time. It is concluded that the first bromine insertion is a two-step process; the first step follows zero-order kinetics and corresponds to the building of metastahle structures, where electron transfer is more restricted than in lamellar or residue compounds formed at a later time.