Open AccessActivated Carbons from Crosslinked Novolac Resin
Author(s) -
J. J. Pająk,
Grzegorz Łabojko,
A. Lachowski
Publication year - 2005
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1260/026361705774355441
Subject(s) - hexamethylenetetramine , chemistry , carbonization , curing (chemistry) , char , carbon dioxide , activated carbon , yield (engineering) , nitrogen , polymer chemistry , nuclear chemistry , organic chemistry , pyrolysis , adsorption , composite material , materials science
Activated carbons were prepared from well-characterized Novolac resin cured with various amounts of hexamethylenetetramine (HMTA). The process consisted of curing the resin with HMTA at 200°C, carbonization in nitrogen at 600°C and gasifying the char in carbon dioxide or in steam at 900°C. The influence of the amount of HMTA used for curing on the yield and the characteristics of the activated carbon was investigated. The pore volume attained a maximum for Novolac initially cured with ca. 2 wt% HMTA. Further increase in the amount of HMTA used for curing resulted in an increase in the yield of active carbon, but the susceptibility to carbon dioxide activation decreased. Relative to carbon dioxide, the use of steam generated a narrower, but more extensive, microporosity in the char obtained from cured Novolac resin.