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 |
|---|---|
| Pages (from-to) | 4135-4139 |
| Number of pages | 5 |
| Journal | ChemSusChem |
| Volume | 10 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 9 Nov 2017 |
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Keywords
- heterogeneous catalysis
- metal–organic frameworks
- polymerization
- structural defects
- zeolites
ASJC Scopus subject areas
- Environmental Chemistry
- Chemical Engineering(all)
- Materials Science(all)
- Energy(all)
Cite this
Ring-Opening Polymerization of l-Lactide to Cyclic Poly(Lactide) by Zeolitic Imidazole Framework ZIF-8 Catalyst. / Luo, Zhixiong; Chaemchuen, Somboon; Zhou, Kui; Verpoort, Francis.
In: ChemSusChem, Vol. 10, No. 21, 09.11.2017, p. 4135-4139.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ring-Opening Polymerization of l-Lactide to Cyclic Poly(Lactide) by Zeolitic Imidazole Framework ZIF-8 Catalyst
AU - Luo, Zhixiong
AU - Chaemchuen, Somboon
AU - Zhou, Kui
AU - Verpoort, Francis
PY - 2017/11/9
Y1 - 2017/11/9
N2 - 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.
AB - 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.
KW - heterogeneous catalysis
KW - metal–organic frameworks
KW - polymerization
KW - structural defects
KW - zeolites
UR - http://www.scopus.com/inward/record.url?scp=85033450478&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85033450478&partnerID=8YFLogxK
U2 - 10.1002/cssc.201701438
DO - 10.1002/cssc.201701438
M3 - Article
AN - SCOPUS:85033450478
VL - 10
SP - 4135
EP - 4139
JO - ChemSusChem
JF - ChemSusChem
SN - 1864-5631
IS - 21
ER -