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Studies of activated charcoal cloth. I. Modification of adsorptive properties by impregnation with boron-containing compounds

✍ Scribed by J.J. Freeman; F.G.R. Gimblett; R.A. Roberts; K.S.W. Sing

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 466 KB
Volume: 25
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(87)90198-9

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✦ Synopsis

Adsorption isotherms of nitrogen have been determined at 77 K on samples of activated charcoal cloth prepared from viscose rayon cloth after impregnation of the latter with aqueous solutions of various boron-containing compounds. Application of the as-method of isotherm analysis revealed that all the adsorbents were highly microporous but, in addition, some possessed an appreciable surface area located outside the micropore structure. This "external" area was especially large (200-300 m* g-l) in the case of activated charcoal cloths derived from samples initially impregnated with aqueous solutions containing boric acid/NaCl or boric acid/borax.

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