Evaluation of Micropore Width of Activated Carbon Fibers by MultiStage Micropore Filling Analysis
Open Access
- 1 January 1989
- journal article
- Published by The Carbon Society of Japan in TANSO
- Vol. 1989 (140) , 288-295
- https://doi.org/10.7209/tanso.1989.288
Abstract
Cellulose-, polyacrylonitrile-, and pitch-based activated carbon fibers (ACFs) were partially oxidized at 373-1173 K for 1 h in air. The detailed N2 adsorption isotherms of 60-100 points for these partially oxidized ACFs were statically measured by use of a computer controlled gravimetric apparatus. The adsorption isotherms were analyzed by the Dubinin-Radushkevich plots and it was confirmed that N2 molecules are filled by the multi-stage micropore filling mechanism (MSMF) proposed in the preceding paper. The changes in the micropore size distribution and the average micropore width of ACF were evaluated by applying the MSMF mechanism; in the case of pitch-based ACFs, the average micropore width increases from 0.85 to 1.20 nm with the change of oxidation temperature from 373 to 1173 K.Keywords
This publication has 0 references indexed in Scilit: