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Production of activated carbon by K 2 CO 3 activation treatment of furfural production waste and its application in gas storage
Author(s) -
Sun Yong,
Yang Gang,
Wang YunShan,
Zhang JinPing
Publication year - 2011
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.10503
Subject(s) - activated carbon , adsorption , microporous material , hydrogen , hydrogen storage , volume (thermodynamics) , carbon fibers , furfural , chemistry , bet theory , chemical engineering , partial pressure , materials science , inorganic chemistry , organic chemistry , catalysis , thermodynamics , oxygen , composite material , physics , composite number , engineering
Abstract Activated carbon was produced by K 2 CO 3 chemical activation of furfural production waste. The results showed that the product is essentially microporous carbon whose BET surface area and pore volume when the carbon was activated at 800°C were 2218 m 2 /g and 1.04 cm 3 /g, respectively. The potential usefulness of resultant carbons for gas storage is closely investigated. The hydrogen adsorption study showed that all the carbons exhibited a fast adsorption rate and the carbon activated at 800°C had the largest amount of adsorbed hydrogen due to its greater specific surface area and micropore volume. The hydrogen adsorption capacity of the carbon activated at 800°C can reach 1.7 wt % at 77K 1 atm and 0.48 wt % at 298K 6 MPa, respectively. The isosteric heat of adsorption with zero loading of hydrogen on carbon with the largest specific surface area can be 5 kJ/mol. The adsorption model based on Tóth equation together with Benedict‐Webb‐Rubin (BWR) equation of state is proposed for this carbon in adsorbing hydrogen under high pressure. © 2010 American Institute of Chemical Engineers Environ Prog, 2010.