Effect of MAF-6 Crystal Size on Its Physicochemical and Catalytic Properties in the Cycloaddition of CO2 to Propylene Oxide Full article
| Journal |
Catalysts
ISSN: 2073-4344 |
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| Output data | Year: 2021, Volume: 11, Number: 9, Article number : 1061, Pages count : 17 DOI: 10.3390/catal11091061 | ||||||
| Tags | zinc zeolitic imidazolate frameworks; MAF-5; MAF-6; effect of particle size; cycloaddition; CO2; propylene carbonate; propylene oxide | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0008 |
| 2 | National Research Foundation of Korea | NRF-2020R1A4A1018393 |
Abstract:
Zeolitic imidazolate frameworks MAF-5 and MAF-6 based on Zn2+ and 2-ethylimidazole were demonstrated to be efficient heterogeneous catalysts in solvent-free coupling of CO2 and propylene oxide (PO) to produce propylene carbonate (PC) at 0.8 MPa of CO2 and 80 °C. Activity of MAF-5 was lower in comparison with MAF-6 due to the difference in their structural and textural characteristics. MAF-6 samples with particle size of 190 ± 20, 360 ± 30, and 810 ± 30 nm were prepared at room temperature from [Zn(NH3)4](OH)2 and 2-ethylimidazole. Control of particle size was achieved by variation of type of alcohol in alcohol/cyclohexane media for the preparation of MAF-6. According to this comprehensive study, the yield of PC was found to decrease with increasing crystal size of the MAF-6 material, which was related to the change in textural properties and the number and localization of active sites. The combination of MAF-6 with particle size of with particle size of 190 ± 20 nm and tetrabutylammonium bromide ([n-Bu4N]Br) as co-catalyst led to an approximately 4-fold enhancement in the yield of PC (80.5%). Compared with reported ZIFs catalysts, the efficiencies of MAF-5/[n-Bu4N]Br and MAF-6/[n-Bu4N]Br binary systems were comparable and higher under similar reaction conditions.
Cite:
Timofeeva M.N.
, Lukoyanov I.A.
, Panchenko V.N.
, Bhadra B.N.
, Gerasimov E.Y.
, Jhung S.H.
Effect of MAF-6 Crystal Size on Its Physicochemical and Catalytic Properties in the Cycloaddition of CO2 to Propylene Oxide
Catalysts. 2021. V.11. N9. 1061 :1-17. DOI: 10.3390/catal11091061 WOS Scopus РИНЦ AN OpenAlex
Effect of MAF-6 Crystal Size on Its Physicochemical and Catalytic Properties in the Cycloaddition of CO2 to Propylene Oxide
Catalysts. 2021. V.11. N9. 1061 :1-17. DOI: 10.3390/catal11091061 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Aug 10, 2021 |
| Accepted: | Aug 30, 2021 |
| Published online: | Aug 31, 2021 |
| Published print: | Sep 1, 2021 |
Identifiers:
| Web of science: | WOS:000699384500001 |
| Scopus: | 2-s2.0-85114084507 |
| Elibrary: | 47012878 |
| Chemical Abstracts: | 2021:2329669 |
| OpenAlex: | W3197310678 |