Direct synthesis of Zr-SBA-15 mesoporous molecular sieves with high zirconium loading: Characterization and catalytic performance after sulfated

被引：73

作者：

Li Fuxiang ^{[1
]}

Yu Feng ^{[1
]}

Li Yongli ^{[1
]}

Li Ruifeng ^{[1
]}

Xie Kechang ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Coal Sci & Technol MOE, Inst Special Chem, Taiyuan 030024, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 101卷 / 1-2期

关键词：

Zr-SBA-15; synthesis; sulfated; isomerization;

D O I：

10.1016/j.micromeso.2006.12.018

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The Zr-SBA-15 mesoporous materials with high Zr/Si ratio (0-2.32) were first synthesized directly using zirconium nitrate and tetraethyl orthosilicate as precursor, displaying higher thermal stability after activated at 600 degrees C. Si-29 NMR spectra revealed the part existance of ZrO2 in the framework of SBA-15. After sulfated, the SO42-/Zr-SBA-15 exhibited high activity in the isomerization of n-pentane at 35 degrees C, and the conversion of n-pentane reached 93.9% after reacting 180 min with the SO42-/Zr-SBA-15 of Zr/Si = 1.3, which was higher compared with the bulk sulfated zirconia material and the SBA-15 modified with SO42-/ZrO, by incipient wetness method. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：250 / 255

页数：6

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