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Title: | Efficiency in CO2-utilization strategies: The case of styrene carbonate synthesis in microdroplets conditions | Authors: | Urbani, Daniele Rovegno, Caterina Massi, Alessandro LEBLEBICI, Mumin enis KAYAHAN, Emine Polo, Eleonora Dambruoso, Paolo |
Issue Date: | 2023 | Publisher: | ELSEVIER SCI LTD | Source: | Journal of CO2 Utilization, 67 (Art N° 102328) | Abstract: | The styrene oxide to styrene carbonate conversion performed in CO2 atmosphere, herein selected as a case study, was implemented in microdroplets (aerosol) reactions at the preparative scale (3.5 mmol of the starting material) and mild conditions (1 atm CO2 pressure), within a custom-made ultrasonic nebulization reactor. Upon opti-mization of the promoter stoichiometry (1 eq of 4.3 TEG/KI ratio) and methanol (MeOH) dilution (7.5 mL of 2.5 v/v MeOH/TEG), performances under mass transfer-limited conditions of this novel methodological paradigm have been compared at 25 degrees C and 50 degrees C with those implemented as: a) no-stirred, b) stirred, and c) sonicated bulk reactions. Complete selectivity and an apparent acceleration factor (AAF) of 1.9 was registered at both temperature for microdroplets reactions in respect with the sonicated counterparts, these latter performing better than the other bulk reactions. These significative efficiency improvements, candidate aerosol reactions as a preferred process intensification approach in the realm of effective CO2-utilization strategies and, in general, in the development and exploitation of gas-liquid two-phase reactions. | Notes: | Dambruoso, P (corresponding author), Italian Natl Res Council, Inst Organ Synth & Photoreact, Area Ric Bologna,via P Gobetti 101, I-40129 Bologna, Italy. paolo.dambruoso@isof.cnr.it |
Keywords: | CO2 utilization;Cyclic carbonates;Aerosol reactions;Microdroplets;Nebulization | Document URI: | http://hdl.handle.net/1942/39117 | ISSN: | 2212-9820 | e-ISSN: | 2212-9839 | DOI: | 10.1016/j.jcou.2022.102328 | ISI #: | 000891098300002 | Rights: | 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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Efficiency in CO2-utilization strategies_ The case of styrene carbonate synthesis in microdroplets conditions.pdf | Published version | 3.57 MB | Adobe PDF | View/Open |
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