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Preparation and characterization of activated carbon spheres from polystyrene sulphonate beads by steam and carbon dioxide activation
Author(s) -
Singh Arjun,
Lal Darshan
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31340
Subject(s) - carbonization , activated carbon , adsorption , carbon dioxide , scanning electron microscope , polystyrene , chemical engineering , materials science , bet theory , specific surface area , microporous material , carbon fibers , chemistry , catalysis , organic chemistry , composite material , polymer , composite number , engineering
The polymeric precursor polystyrene sulphonate beads were used to produce activated carbon spheres (ACSs). ACSs were prepared by carbonization of polymeric precursor at 800°C followed by activation of resultant char with steam and carbon dioxide activation processes. The resulting ACSs were characterized for N 2 adsorption, Raman spectrometry, and scanning electron microscope (SEM). The adsorption properties such as, BET surface area ( S BET ), pore volume ( V pore ), and micropore volume ( V micro ) of ACSs produced at different gasification time and temperature with steam and carbon dioxide activation were investigated in this study. It is found that porosity of ACSs produced from steam and carbon dioxide activation increases with increasing activation time. The results exhibited that ACSs produced from above carbon dioxide activation have shown high S BET and V pore 1266 m 2 /g and 1.13 cm 3 /g respectively compared to ACSs from steam activation S BET 949 m 2 /g and V pore 0.98 cm 3 /g, respectively. SEM study revealed that ACSs produced from carbon dioxide activation have exhibited a smooth surface and better microstructure as compared to ACSs from steam activation process. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010