Microporosity of activated carbons produced from heat-treated and fractionated pitches

被引：30

作者：

Daguerre, E ^{[1
]}

Guillot, A ^{[1
]}

Py, X ^{[1
]}

机构：

[1] Inst Sci & Genie Mat Proc, IMP, CNRS, F-66860 Perpignan, France

来源：

CARBON | 2000年 / 38卷 / 01期

关键词：

petroleum pitch; activated carbon; adsorption refrigerating machines;

D O I：

10.1016/S0008-6223(99)00106-2

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 with degrees of burn-off ranging from 12 wt.% to 60 wt.% have been prepared from toluene-insoluble (T.I.) fractions of a heat-treated A240 petroleum pitch, After toluene fractionation, the resulting pitches have been stabilized, carbonized and then activated using carbon dioxide at 1173 K. Characterization by high pressure carbon dioxide adsorption has been performed in order to determine the properties of activated carbons and to evaluate their performances for adsorption refrigerating machines. Microporous properties are influenced by pitch composition resulting from toluene fractionation and residual gamma-resins inhibit the microporosity development, Due to their high microporous volume, activated carbons prepared from extensively gamma-resins extracted pitches appear appropriate for cooling applications. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：59 / 64

页数：6

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