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Conversion of CO2 into cyclic carbonates by a Co(ii) metal–organic framework and the improvement of catalytic activity via nanocrystallization.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 2/14/2018, Vol. 47 Issue 6, p1768-1771. 4p. - Publication Year :
- 2018
-
Abstract
- The Co(ii) metal–organic framework (MOF) {[Co(μ3-L)(H2O)]·0.5H2O}n (1, H2L = thiazolidine 2,4-dicarboxylic acid) with rich Lewis acid sites was used as a catalyst for the conversion of CO2 and propylene oxide into propylene carbonate with a yield of up to 98% under 50 °C and 1 atm. 1 exhibited excellent reusability, which could be regenerated easily for at least five runs without a decrease in the yield. Importantly, we synthesized two types of nano-crystals (N1 and N2) of 1 with polyvinylpyrrolidone (PVP) and hexadecyltrimethylammonium bromide (CTAB) as surfactants, respectively, and investigated their catalytic properties in comparison with that of 1 in the powder phase. A significant enhancement in both catalytic efficiency and product yield was observed when 1 was nano-crystallized. This is the first investigation about the relationship between the morphology and the catalytic parameters of MOFs. The results showed a strategy for efficiently applying MOFs as catalysts towards CO2 conversion, which could also be used in other MOF-catalyzed processes. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON monoxide
*CATALYTIC activity
*CRYSTALLIZATION
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 47
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 127836798
- Full Text :
- https://doi.org/10.1039/c7dt04882c