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http://dx.doi.org/10.12925/jkocs.2008.25.2.15

A Study on Separation of Naphthalene from Naphthalene and 2-Methylnaphthalene Mixture by Melt and Solution Crystallization  

Kim, Sung-Il (R&D center, Samchun Pure Chemical Ind. Co., LTD)
Jeong, Kwang-Eun (New Chemistry Division, Korea Research Institute of Chemical Technology)
Chae, Ho-Jeong (New Chemistry Division, Korea Research Institute of Chemical Technology)
Jeong, Soon-Yong (New Chemistry Division, Korea Research Institute of Chemical Technology)
Kim, Chul-Ung (New Chemistry Division, Korea Research Institute of Chemical Technology)
Publication Information
Journal of the Korean Applied Science and Technology / v.25, no.2, 2008 , pp. 232-239 More about this Journal
Abstract
Separation of naphthalene from naphthalene and 2-methylnaphthalene mixture has been studied by layered melt and solution crystallization using ethylalcohol. Purity and yield of naphthalene depended mainly on the cooling rate: The effective distribution coefficient ($K_{eff}$) as the degree of impurity removal was observed to decrease with the decreasing in cooling rate. Purity of naphthalene can be enhanced to $5{\sim}7%$ by melt crystallization using 90% naphthalene and the purity of naphthalene can be obtained to be 99% up by solution crystallization.
Keywords
melt crystallization; solution crystallization; naphthalene; 2-methylnaphthalene; ethylalcohol;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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