Authors:
Lina Han Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Soo-Jin Choi Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Moon-Seok Park Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Seon-Myong Lee Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Yu-Jin Kim Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Moon-Il Kim Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Binyuan Liu School of Chemical Engineering, Institute of Polymer Science & Engineering, Hebei University of Technology, Tianjin 300130, China

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Dae-Won Park Division of Chemical and Biomolecular Engineering, Pusan National University, Jangjeon-dong, Gumjung-gu, Busan 609-735, Republic of Korea

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Abstract

In this study, a series of imidazolium-based ionic liquids (ILs) having carboxylic acid moieties were synthesized and used as new homogeneous catalysts to synthesize cyclic carbonates from CO2 and epoxides. Even in the absence of any co-catalyst and organic solvent, carboxylic-acid-functionalized ILs showed better catalytic activity in the coupling reaction of CO2 and styrene oxide for the production of styrene carbonate than did hydroxyl-functionalized ILs and conventional ILs without any functional moieties. A detailed investigation was carried out on a variety of factors that affected the reactivity, such as the alkyl chain length and the molecular composition of IL molecules including the halide ions. The effect of various reaction parameters such as reaction time, temperature, CO2 pressure and catalyst amount was also investigated in detail. The mechanism underlying the enhanced rate of the cycloaddition reaction in the presence of carboxylic-acid-functionalized ILs was proposed.

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation
1974
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)