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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 29, Number 1
BKCSDE 29(1)
January 20, 2008

Title	Lithium Chloride-Imidazolium Chloride Melts for the Coupling Reactions of Propylene Oxide and CO₂
Author	Ly Vinh Nguyen, Bora Lee, Dinh Quan Nguyen, Min-Jung Kang, Hyunjoo Lee, Seol Ryu, Hoon Sik Kim, Je Seung Lee
Keywords	Ionic liquids, Lithium chloride, Lithium dichloride, Carbon dioxide, Cyclic carbonates
Abstract	A series of lithium chloride-imidazolium chloride (LiCl-[imidazolium]Cl) melts were prepared and their catalytic activities were evaluated for the coupling reactions of propylene oxide and CO₂. At the constant mole of LiCl, the catalytic activities of LiCl-[imidazolium]Cl melts increased with increasing molar ratio of [imidazolium]Cl/LiCl up to 2, but thereafter decreased rapidly. The variation of alkyl groups on the imidazolium ring showed a negligible effect on the catalytic activity, but the number of alkyl groups present on the imidazolium cation exerts a pronounced effect. Catalysis and electrospray ionization tandem mass spectral analysis results of LiCl-[imidazolium]Cl melts imply that the activity of the melt is strongly related to the amount of LiCl₂^- generated from the melt.
Page	148 - 0
Full Text	PDF

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