Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp2092362
Title: Mesoporous activated carbon structure originated from cross-linking hydroxyethyl cellulose precursor by carboxylic acids
Authors: Sun, M.
Hong, L. 
Tan, G.M.
Issue Date: 12-Jan-2012
Citation: Sun, M., Hong, L., Tan, G.M. (2012-01-12). Mesoporous activated carbon structure originated from cross-linking hydroxyethyl cellulose precursor by carboxylic acids. Journal of Physical Chemistry C 116 (1) : 352-360. ScholarBank@NUS Repository. https://doi.org/10.1021/jp2092362
Abstract: Mesoporous matrixes of activated carbon (AC) are normally synthesized using the hard or soft template method. This work explores a template-free method to synthesize a mesoporous AC matrix through creating interchain bonding in its precursor. Hydroxyethyl cellulose (HEC) was adopted as a precursor, and its polymer chains were covalently cross-linked by the esterification reaction. Four types of organic carboxylic acids were used to examine the effect of esterification cross-linking on the formation of a mesoporous structure primarily through the course of pyrolysis. The BET surface analysis of the resulting ACs reveals an explicit correlation between the number of carboxylic acid groups on a benzene ring and the mesoporous structures of a synthesized AC. Moreover, it is also found that an optimal cross-linking degree for attaining the maximum volume fraction of mesopores exists with respect to each type of the cross-linker used. An attempt was made to understand how a cross-linked HEC is converted to a porous structure of an AC. The mesoporous structures of the ACs synthesized were also assessed by their capability of stripping H 2S from a gas stream. © 2011 American Chemical Society.
Source Title: Journal of Physical Chemistry C
URI: http://scholarbank.nus.edu.sg/handle/10635/89381
ISSN: 19327447
DOI: 10.1021/jp2092362
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