Unusual pre-oxidized polyacrylonitrile fibres behaviour against their activation with CO2: carbonization effect

The CF-PAN activation process with CO 2 has been analysed. Activation of CF-PAN with CO 2 leads to unusual results both, activation percentage evolution over the time and generated porosity development. In the explanation has been highlighted the role of the carbonization step in the CF-PAN activati...

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Bibliographic Details
Published inAdsorption : journal of the International Adsorption Society Vol. 22; no. 2; pp. 223 - 231
Main Authors Trautwein, G., Plaza-Recobert, M., Alcañiz-Monge, J.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.02.2016
Subjects
Chemistry
Chemistry and Materials Science
Engineering Thermodynamics
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Surfaces and Interfaces
Thin Films
Microporosity
Polyacrylonitrile carbon fibres
Reactivity
CO
activation
Activated carbon fibres
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Summary:The CF-PAN activation process with CO 2 has been analysed. Activation of CF-PAN with CO 2 leads to unusual results both, activation percentage evolution over the time and generated porosity development. In the explanation has been highlighted the role of the carbonization step in the CF-PAN activation process. The analysed results point to the fact that part of the released nitrogen-containing compounds during PANOX fibres carbonization are deposited on the CF surface, which affects to carbonized PAN fibres, decreasing actives sites, or acting as inhibitors of the gasification reaction.
ISSN:0929-5607
1572-8757
DOI:10.1007/s10450-016-9757-1