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Highly efficient synthesis of cyclic carbonates from CO2 and epoxides catalyzed by KI/lecithin

Paper ID Volume ID Publish Year Pages File Format Full-Text
55424 47052 2012 6 PDF Available
Title
Highly efficient synthesis of cyclic carbonates from CO2 and epoxides catalyzed by KI/lecithin
Abstract

Development of efficient, cheap and non-toxic catalysts for the cycloaddition of CO2 with epoxides to produce five-membered cyclic carbonates is a very attractive topic. In this work, cycloaddition of CO2 with propylene oxide (PO) to propylene carbonate (PC) catalyzed by potassium halides (KCl, KBr, and KI) in the presence of lecithin, which is renewable, non-toxic, environmentally benign and biocompatible, was studied. It was discovered that potassium halides and lecithin had excellent synergetic effect in promoting the reaction, and KI/lecithin catalytic system was the most efficient among them. The effects of temperature, pressure, reaction time, and amount of catalysts on the reaction were investigated using KI/lecithin as the catalyst, and the reaction conditions were optimized. At the optimal conditions, the KI/lecithin catalytic system was also very active and selective for the cycloaddition of CO2 with other epoxides, such as glycidyl phenyl ether, epichlorohydrin, styrene oxide, 1,2-epoxyhexane, and glycidyl methacrylate. The mechanism for the synergetic effect was also studied.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (73 K)Download as PowerPoint slideHighlights► In this work we study the cycloaddition of CO2 with epoxides catalyzed by KI/lecithin. ► Lecithin and KI had excellent synergetic effect in promoting the reaction. ► The KI/lecithin catalytic system was very active and selective for the reaction. ► The mechanism for the synergetic effect was also studied.

Keywords
Cycloaddition; Cyclic carbonates; KI; Lecithin; Synergetic effect; Epoxides
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Highly efficient synthesis of cyclic carbonates from CO2 and epoxides catalyzed by KI/lecithin
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 183, Issue 1, 20 March 2012, Pages 130–135
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us