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Citation: ZHANG Bao, LIU Zhi-Guang, WANG Xin-Ping. Adsorption of Ethyl Acetate on Activated Carbons and Their Regeneration[J]. Chinese Journal of Applied Chemistry, ;2009, 26(3): 337-341. shu

Adsorption of Ethyl Acetate on Activated Carbons and Their Regeneration

1.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024

Corresponding author: WANG Xin-Ping,
Received Date: 11 February 2008
Available Online: 12 May 2008

Adsorption of ethyl acetate(EA) on activated carbons at 40 ℃ was investigated to find the effects of pore structure,surface properties and relative humidity on the adsorption of EA.It was found that the adsorption capacity of activated carbons for EA is mainly determined by micropore structure(1.70 nm) but not surface chemistry of the adsorbents.The saturated adsorption amounts of EA on the activated carbons AC and Y2 with abundant micropore area were 0.31 g/g and 0.28 g/g,respectively,in the gas mixture of EA/N₂ with a concentration of 0.30% in volume percentage(φ(EA)).A saturated adsorption amount as high as 90% of that achieved under dry conditions was still obtained even when an adsorption experiment was conducted at a relative humidity of 40%.Regeneration of activated carbon and the recovery of EA could be effectively completed by heating the absorbent to 180 ℃ after adsorption.The adsorption property of the adsorbent for EA was not influenced by little O₂ in the gas flow used for the adsorbent regeneration.Activated carbon could be well used repeatedly as an adsorbent for EA adsorption after the regeneration without change in property for EA adsorption.
- adsorption,
- ethyl acetate,
- activated carbon,
- regeneration,
- recovery
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