Реферат: 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.

Библиографическая ссылка: 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 CAPlus OpenAlex Sciact

Даты:

Поступила в редакцию:	10 авг. 2021 г.
Принята к публикации:	30 авг. 2021 г.
Опубликована online:	31 авг. 2021 г.
Опубликована в печати:	1 сент. 2021 г.

Идентификаторы БД:

Web of science:	WOS:000699384500001
Scopus:	2-s2.0-85114084507
РИНЦ:	47012878
Chemical Abstracts:	2021:2329669
OpenAlex:	W3197310678
Sciact:	44371

Цитирование в БД:

БД	Цитирований
OpenAlex	26

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