Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/2518
|
Title: | Preparation of activated carbon fibres from acrylic textiles fibres |
Authors: | Nabais, Joao Carrott, Peter Ribeiro Carrott, Manuela |
Keywords: | activated carbon fibre acrylic fibre |
Issue Date: | 2001 |
Abstract: | Acrylic textile fibres have been used to prepare activated carbon fibres (ACF). Characterisation by means of elemental
analysis, XRD, SEM and low temperature nitrogen adsorption show that the properties of the acrylic ACF compare
favourably with those of non-textile PAN, Kevlar and Nomex ACF. A particularly interesting, and never previously reported,
feature was observed with fibres activated at 9008C. It was found, with one fibre in particular, that over a very limited range
of burn-off between 40 and 50% the micropore volume tripled, the mean pore width suddenly increased, the mean stack
height, L , suddenly decreased and the reactivity decreased by more than a half. The observed changes suggest a change in c
the mechanism of activation from one involving principally gasification of amorphous or more reactive carbon at low
burn-off to one involving principally attack of individual crystallites and their reorganisation at higher burn-off. |
URI: | http://hdl.handle.net/10174/2518 |
Type: | article |
Appears in Collections: | QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica CQE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|