Abstract
The catalytic activity of ZIF-8 in the ring-opening polymerization of l-lactide without solvents or cocatalysts is presented for the first time. Two different synthetic strategies have been applied for synthesizing ZIF-8, either under solvothermal condition or by spray-drying procedure. Their catalytic activities are found to be correlating with the presence of open active sites in ZIF-8 structure. The structural defects that afford active acid and basic sites are supposed to cooperatively catalyze the reaction. ZIF-8 assembled by spray-drying technique, displays a superior catalytic activity at temperature of 160 °C, leading to the formation of high molecular weight cyclic polylactide. The ZIF-8 catalysts could be recycled and reused without any significant loss of catalytic activity.
Original language | English |
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Pages (from-to) | 4135-4139 |
Number of pages | 5 |
Journal | ChemSusChem |
Volume | 10 |
Issue number | 21 |
DOIs | |
Publication status | Published - 9 Nov 2017 |
Keywords
- heterogeneous catalysis
- metal–organic frameworks
- polymerization
- structural defects
- zeolites
ASJC Scopus subject areas
- Environmental Chemistry
- Chemical Engineering(all)
- Materials Science(all)
- Energy(all)