TARTARIC ACID TEMPLATED SYNTHESIS OF MESOPOROUS Ti-INCORPORATED SILICA AND ITS CATALYTIC ACTIVITY FOR THE RING-OPENING POLYMERIZATION OF ε-CAPROLACTONE*

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TARTARIC ACID TEMPLATED SYNTHESIS OF MESOPOROUS Ti-INCORPORATED SILICA AND ITS CATALYTIC ACTIVITY FOR THE RING-OPENING POLYMERIZATION OF ε-CAPROLACTONE*

Papers | Updated：2021-06-21

- TARTARIC ACID TEMPLATED SYNTHESIS OF MESOPOROUS Ti-INCORPORATED SILICA AND ITS CATALYTIC ACTIVITY FOR THE RING-OPENING POLYMERIZATION OF ε-CAPROLACTONE*
- Vol. 20, Issue 4, Pages: 361-368(2002)
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- Published：20 August 2002
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TARTARIC ACID TEMPLATED SYNTHESIS OF MESOPOROUS Ti-INCORPORATED SILICA AND ITS CATALYTIC ACTIVITY FOR THE RING-OPENING POLYMERIZATION OF ε-CAPROLACTONE*[J]. 2002, 20(4): 361-368.
DOI：

TARTARIC ACID TEMPLATED SYNTHESIS OF MESOPOROUS Ti-INCORPORATED SILICA AND ITS CATALYTIC ACTIVITY FOR THE RING-OPENING POLYMERIZATION OF ε-CAPROLACTONE*[J]. 2002, 20(4): 361-368. DOI：

摘要

Ti-incorporated mesoporous silica materials with pore diameters of 3-4 nm have been prepared via the co-hydrolysis and co-condensation reactions

that is the sol-gel reactions

of titanium (IV) tetrabutoxide and tetraethylorthosilicate in the presence of tartaric acid as template

followed by extraction with ethanol to remove the templatemolecules. The materials were characterized in detail by Fourier transform infrared spectroscopy

nitrogen adsorption-desorption test

powder X-ray diffraction

transmission electron microscopy and X-ray energy disperisve spectroscopy.The results indicate that the Ti-containing silica materials have large specific surface areas(ca.1200 m2g-1) and pore volumes (ca/ 0.900 cm3g-1). The mesoporosity arises from disordered interconnecting channels or pores.The Ti-incorporated silicas exhibit catalytic activity for the ring-opening polymerization of ε-caprolactone

otherwise

the pure mesoporous silica material shows on catalytic activity under the identical conditions.

Abstract

Ti-incorporated mesoporous silica materials with pore diameters of 3-4 nm have been prepared via the co-hydrolysis and co-condensation reactions

that is the sol-gel reactions

of titanium (IV) tetrabutoxide and tetraethylorthosilicate in the presence of tartaric acid as template

followed by extraction with ethanol to remove the templatemolecules. The materials were characterized in detail by Fourier transform infrared spectroscopy

nitrogen adsorption-desorption test

powder X-ray diffraction

otherwise

the pure mesoporous silica material shows on catalytic activity under the identical conditions.

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