MICROTEXTURE OF NONGRAPHITIZING CARBONS AND TEM STUDIES OF SOME ACTIVATED SAMPLES

被引：65

作者：

HUTTEPAIN, M

OBERLIN, A

机构：

[1] Laboratoire Marcel Mathieu., 64000 Pau, 2, avenue du President P. Angot

来源：

CARBON | 1990年 / 28卷 / 01期

关键词：

activated carbons; activated fibers; nongraphitizing carbons microstructure; TEM studies of activated carbons;

D O I：

10.1016/0008-6223(90)90100-D

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：

Various commercial samples of activated carbons (fibers and grains) were studied by adsorption isotherms of N2 at 78 K and CO2 at 195 K. The classification of the samples by increasing porous volume and specific surface is confirmed and explained by high-resolution TEM studies. Appropriate steps were chosen in the transfer function of the lens so as to analyze the various pore shapes. Only a few mesopores are cages. The micropores and ultra micropores are slit-like pores. They are obtained by complete oxidation of one or more aromatic layers in a stack. At low oxidation degree only one layer is destroyed at random, then more than one layer, then elemental stacks themselves. At the maximum oxidation corresponds etch pits. © 1990.

引用

页码：103 / 111

页数：9

共 18 条

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