Hydrothermal synthesis of mesoporous zirconosilicate with enhanced textural and catalytic properties with the aid of amphiphilic organosilane

被引：26

作者：

Zhao, Zhonglin ^{[1
]}

Liu, Yueming ^{[1
]}

Wu, Haihong ^{[1
]}

Li, Xiaohong ^{[1
]}

He, Mingyuan ^{[1
]}

Wu, Peng ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2009年 / 123卷 / 1-3期

关键词：

Mesoporous zeolite; Zirconosilicate; Redox; MFI; Meerwein-Ponndorf-Verley; MICROPOROUS ZIRCONIUM SILICATES; PONNDORF-VERLEY REDUCTION; HETEROGENEOUS CATALYST; IMPROVED PERFORMANCE; MFI ZEOLITE; CRYSTALLINE; DECOMPOSITION; SUBSTITUTION;

D O I：

10.1016/j.micromeso.2009.04.018

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Mesoporous MFI-type zirconosilicates (Zr-MFI) with different Zr contents were hydrothermally synthesized by the aid of amphiphilic organosilane. Their physicochemical properties were characterized by various techniques, and their catalytic performance was investigated for Meerwein-Ponndorf-Verley (MPV) reduction of cyclohexanone with 2-propanol. The mesoporous Zr-MFI preserved the properties of conventional Zr-MFI such as high crystallinity and incorporation of tetrahedral Zr ions in framework, and was further featured with mesoporosity of 3.5 nm diameter, enlarged external surface area, more Lewis acid sites and less defect sites. Compared with conventional Zr-MFI. the mesoporous Zr-MFI showed drastically improved activity for the MPV reduction of cyclohexanone, which was predominantly attributed to the contribution of the mesopores supplying an easier accessibility to the catalytic active sites for bulky molecules. Moreover, the mesoporous Zr-MFI was a stable and reusable catalyst. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：324 / 330

页数：7

共 21 条

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