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Adsorption of nitrogen and water vapour by activated Kevlar® chars

✍ Scribed by John J. Freeman; John B. Tomlinson; Kenneth S.W. Sing; Charis R. Theocharis

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
565 KB
Volume
31
Category
Article
ISSN
0008-6223

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✦ Synopsis

4bstract-Fibrous activated carbons were prepared from Kevla+ (i.e. poly f[l-phenylene terephthaiamide), in the form of a commercially available woven textile. The cloth was carbonised in nitrogen and activated in either steam or carbon dioxide to varying burn-offs at I123 K. The resultant activated chars were characterised by nitrogen adsorption. water sorption, and elemental analysis. It was found 1 hat significant differences existed between the chars activated in steam and carbon dioxide. Kevlarsc char\ were found to have a greater affinity for waler vapour than comparable rayon chars. The pore volume developed in Kevla@ char5 tended towards a maximum value as the burn-off increased.

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