Porous structure of polyarylamide-based activated carbon fibres

被引：66

作者：

Stoeckli, F ^{[1
]}

Centeno, TA ^{[1
]}

Fuertes, AB ^{[1
]}

Muniz, J ^{[1
]}

机构：

[1] CSIC,INST NACL CARBON,E-33080 OVIEDO,SPAIN

来源：

CARBON | 1996年 / 34卷 / 10期

关键词：

activated fibres; microporosity; molecular-sieve properties;

D O I：

10.1016/0008-6223(96)00088-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Activated carbons were prepared from two polyarylamide fibres (Kevlar and Nomex) by carbonization and subsequent steam activation to 25 and 50% burn-off. The porous structure of the carbons has been investigated by physical adsorption of CH2Cl2 and N2O at 293 K and immersion calorimetry into liquids of different molecular dimensions. The activated fibres have good sorptive capacities and relatively narrow micropores. The materials resulting from activation at low degrees of burn-off could therefore be of great interest in gas separation, owing to their molecular-sieve properties. Compared to industrial activated carbons, the fibres are hydrophilic and have small external surface areas. Copyright (C) 1996 Published by Elsevier Science Ltd

引用

页码：1201 / 1206

页数：6

共 19 条

[1]

Bansal R.C., 1988, ACTIVE CARBON

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