The heats of wetting of carbons in relation to their specific surface areas

✍ Scribed by R.I. Razouk; Sh. Nashed; Wedad E. Mourad

• Publisher: Elsevier Science
• Year: 1965
• Tongue: English
• Weight: 443 KB
• Volume: 2
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(65)90006-0

✦ Synopsis

No simple correlation was found between the heats of wetting in methanol oi a number of carbons, prcp:ired from corn cobs and date pits under varying conditions, and the specitic surface arc.is of the carbons calculated from the adsorption isotherms of methanol vapour. Actually, the heat of wetting per unit area varied several folds as a result of changes in the nature and cnergctics of the surface produced bv thermal treatment and activation.

It is concluded that the use of tlw heat c&t wetting as a i,:wsure of the specific surface ared of carbons has to be adopted with much reserve, and is <~nl;. u arranted If there is independent prnof that the heat of v\etting pc'r unit arv':i is th(, ~an:e foi