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KMID : 1024519980070060753
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Journal of the Environmental Sciences
1998 Volume.7 No. 6 p.753 ~ p.759
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Effect of Solvents on Reactive Extraction of Acrylic Acid
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Lee Sang-Hoon
Shin Jeong-Ho
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Abstract
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In physical and reactive extraction of acrylic acid using various solvents the equilibrium characteristics of extraction were investigated. The degree of extraction in reactive extraction with Tri-n-octylamine(TOA) was 1.5~3 times than that in physical extraction. Distribution ratio was constant in methyl isobutyl ketone(MIBK) and n-butylacetate(n-BAc) but was increased with increasing the concentration of acrylic acid in benzene and chloroform. It can be explained by formation of dimers. Maximum extraction leadings of acrylic acid were three in benzene and were two in MIBK, chloroform and n-BAc, and it was found that acrylic acid was extracted as the form of R In benzene and in MIBK, chloroform and n-BAc. In effect of solvent, the degree of extraction was increased as he difference of solubility parameter of solvent and solute was decreased, and as dielectric constant of solvent was increased.
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KEYWORD
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extraction, extraction leadings, solubility parameter, dielectric constant
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