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Open AccessArticle

ZIF-8 as a Catalyst in Ethylene Oxide and Propylene Oxide Reaction with CO2 to Cyclic Organic Carbonates

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Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 9, 22100 Como, Italy
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Dipartimento di Chimica, NIS e Centro di Riferimento INSTM, Università di Torino, Via G. Quarello 15, I-10135 and Via P. Giuria 7, I-10125 Torino, Italy
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Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(3), 60; https://doi.org/10.3390/chemengineering3030060
Received: 17 May 2019 / Revised: 7 June 2019 / Accepted: 28 June 2019 / Published: 2 July 2019
(This article belongs to the Special Issue CO2 Capture, Utilization, and Storage)
CO2 is an important by-product in epoxides synthesis, accounting for 0.02% of worldwide greenhouse emissions. The CO2 cycloaddition to ethylene and propylene oxides is an important class of reactions due to the versatile nature of the corresponding organic carbonates as chemical feedstocks. We report that these reactions can be catalyzed by ZIF-8 (Zeolitic Imidazole Framework-8) in the absence of solvent or co-catalyst and in mild conditions (40 °C and 750 mbar). In situ infrared spectroscopy places the onset time for ethylene and propylene carbonate formation to 80 and 30 min, respectively. Although there is low catalytic activity, these findings suggest the possibility to cut the CO2 emissions from epoxides production through their direct conversion to these highly valuable chemical intermediates, eliminating de facto energetically demanding steps as the CO2 capture and storage. View Full-Text
Keywords: CO2 reuse; infrared spectroscopy; ZIF-8; organic carbonates CO2 reuse; infrared spectroscopy; ZIF-8; organic carbonates
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MDPI and ACS Style

Vitillo, J.G.; Crocellà, V.; Bonino, F. ZIF-8 as a Catalyst in Ethylene Oxide and Propylene Oxide Reaction with CO2 to Cyclic Organic Carbonates. ChemEngineering 2019, 3, 60.

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