✦ LIBER ✦

177. The behavior of iodine in graphite

✍ Scribed by F.J. Salzano

Publisher: Elsevier Science
Year: 1964
Tongue: English
Weight: 39 KB
Volume: 1
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(64)90468-3

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✦ Synopsis

The behavior of iodine in a highpurity graphite (National Carbon TSX) and a reimpregnated graphite (Graphite Specialties, R-4) has been studied over the temperature range 25-800°C. The quantities of iodine on the graphite were measured directly by means of a tracer technique utilizing Ilsl and a scintillation scanning probe. The effect of outgassing at 200, 900, and 2000°C on the iodine adsorption was determined. The results indicate that iodine on the graphite is both physically adsorbed and chemisorbed at 100°C and above. It was found that the 100°C isotherms give surface areas the same as those obtained with nitrogen at -195°C. At 25°C iodine forms residue compounds with the graphite which cannot be decomposed on heating to 900°C in vacuum. Some results of dectricaf property measurements on the residue compounds will be presented.

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