Efficient Catalytic System Involving Molybdenyl Acetylacetonate and Immobilized Tributylammonium Chloride for the Direct Synthesis of Cyclic Carbonates from Carbon Dioxide and Olefins
| Autor: | Łukasz Kotyrba, Katarzyna Jasiak-Jaroń, Stefan Baj, Agnieszka Siewniak |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Chemistry(all) 010405 organic chemistry Epoxide General Chemistry 010402 general chemistry Divinylbenzene 01 natural sciences Chloride Catalysis Cycloaddition 0104 chemical sciences chemistry.chemical_compound chemistry medicine Organic chemistry Polystyrene Organometallic chemistry medicine.drug |
| Zdroj: | Catalysis Letters. 147:1567-1573 |
| ISSN: | 1572-879X 1011-372X |
| Popis: | An effective direct method for preparing of cyclic carbonates from CO2 and olefins in the presence of tert-butyl hydroperoxide as an oxidant was provided. The first stage, the epoxidation of olefins, was carried out using MoO2(acac)2 as a catalyst (1h, 100 °C), and the second stage, the cycloaddition of CO2 to the resulting epoxide, was proceeded in the presence of immobilized tributylmethylammonium chloride on a polystyrene cross-linked with divinylbenzene, and an aqueous solution of ZnBr2 (100 °C, 0.9 MPa of CO2, 4 h). The proposed method allowed to obtain cyclic carbonates with high yields (50–77%) under mild conditions. Moreover, the immobilized catalyst could be reused at least five times without significant loss of its catalytic activity. |
| Databáze: | OpenAIRE |
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