Catalytic Performance of Dicationic Ionic Liquids and ZnBr2 in the Reaction of Epichlorohydrin and Carbon Dioxide: Kinetic Study

Cyclic carbonate synthesis is an attractive route to utilize CO 2 and reduce green house gas. Numbers of studies have been reported on catalytic synthesis of cyclic carbonate, however, very few studies reported on kinetic analysis of cycloaddition reaction. Present study reports a kinetic analysis f...

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Bibliographic Details
Published inCatalysis letters Vol. 147; no. 8; pp. 2067 - 2076
Main Authors Jaiswal, Pooja, Varma, Mahesh N.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2017
Springer Nature B.V
Subjects
Carbon dioxide
Catalysis
Catalysts
Catalytic activity
Chemical synthesis
Chemistry
Chemistry and Materials Science
Coupling
Cycloaddition
Energy conversion efficiency
Epichlorohydrin
Greenhouse effect
Greenhouse gases
Industrial applications
Industrial Chemistry/Chemical Engineering
Ionic liquids
Organometallic Chemistry
Physical Chemistry
Reaction mechanisms
Cycloaddition reaction
Cyclic carbonate
Dicationic ionic liquid
Zinc bromide
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Summary:Cyclic carbonate synthesis is an attractive route to utilize CO 2 and reduce green house gas. Numbers of studies have been reported on catalytic synthesis of cyclic carbonate, however, very few studies reported on kinetic analysis of cycloaddition reaction. Present study reports a kinetic analysis for coupling reaction of epichlorohydrin (ECH) and carbon dioxide catalyzed by various dicationic ionic liquids (DILs) and zinc bromide. Effects of structural change of DILs on its catalytic activity towards cycloadditiion reaction have also been explored. In addition an attempt has also been made to discuss the plausible reaction mechanism at optimal reaction conditions for coupling of ECH and CO 2 . At a catalyst loading of 0.5 mmol% C 6 (mim) (mim) Br 2 and 0.25 mmol% ZnBr 2 , ECH conversion of 98% can be obtained at 90 °C and 3 MPa in 40 min. Maximum conversion efficiency (98%) and minimum activation energy (20 kJ/mol) was associated with catalytic system comprising of C 6 (mim) (mim) Br 2 and ZnBr 2 . Thus, from industrial application point of view C 6 (mim) (mim) Br 2 and ZnBr 2 are potential catalysts for cyclic carbonate synthesis. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-017-2062-0