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Citation: XU Qun, LI Jian-Bo, HE Jin-Ling, CHANG Yu-Ning, GUO Yi-Qun, SU Yun-Lai. Supercritical CO₂-Mediated Preparation of Solid Acid Catalyst and Its Application in Ring-Opening Polymerization of ε-Caprolactone[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 920-922. shu

Supercritical CO₂-Mediated Preparation of Solid Acid Catalyst and Its Application in Ring-Opening Polymerization of ε-Caprolactone

XU Qun ^a,, ,
LI Jian-Bo ^a ,
HE Jin-Ling ^a ,
CHANG Yu-Ning ^a ,
GUO Yi-Qun ^b ,
SU Yun-Lai ^b

1.
a College of Materials Science and Engineering;
2.
b Department of Chemistry, Zhengzhou University, Zhengzhou 450052

Corresponding author: XU Qun,
Received Date: 13 September 2004
Available Online: 27 February 2005
Fund Project: 河南省杰出青年科学基金(0512001200) (0512001200)河南省自然科学基金(411020900)资助项目 (411020900)

Al-grafted mesoporous silica zeolite materials known as Al-MCM-41 were prepared with supercritical CO₂ as the media.The X-ray diffraction (XRD) patterns and N₂ adsorption/desorption isotherms indicate that Al-modified MCM-41 materials keep silica MCM-41 pore diameter of about 2.7 nm and the excellent structural ordering very well.The gel permeation chromatography (GPC) and ¹H NMR show that the polymerization of ε-caprolactone went well with butanol.It was demonstrated that compared with conventional Al-MCM-41 materials,the aluminosilicate mesoporous zeolite prepared with the aid of supercritical CO₂ is a novel useful catalyst for the polymerization of ε-caprolactone.
- supercritical carbon dioxide,
- aluminum,
- mesoporous molecular sieve,
- ε-caprolactone,
- polymerization
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Supercritical CO₂-Mediated Preparation of Solid Acid Catalyst and Its Application in Ring-Opening Polymerization of ε-Caprolactone