Preparation and Characterization of Supported Molybdenum and Tungsten Schiff Base Complexes on MCM-41 as Nanocatalysts for the Epoxidation of Olefins

被引：0

作者：

Masteri-Farahani, M. ^{[1
]}

Sadeghi, M. ^{[2
]}

Abdollahi, Y. ^{[3
]}

Motlagh, M. Mehdi Kashani ^{[2
]}

Salimi, F. ^{[3
]}

机构：

[1] Tarbiat Moallem Univ, Dept Chem, Tehran, Iran

[2] Iran Univ Sci & Technol, Dept Chem, Tehran, Iran

[3] Islamic Azad Univ, Ardabil Branch, Fac Chem, Ardebil, Iran

来源：

JOURNAL OF NANOSTRUCTURES | 2011年 / 1卷 / 02期

关键词：

Tungsten; Molybdenum; MCM-41; Supported Schiff base; Epoxidation;

D O I：

10.7508/jns.2011.02.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Two new heterogenized epoxidation nanocatalysts based on molybdenum and tungsten compounds were prepared with covalent grafting of MCM-41 with 3-aminoropropyl trimethoxysilane and subsequent reaction with diphenylphosphinobenzaldehyde and complexation with M (Mo, W)O-2(acac)(2). X-ray diffraction and nitrogen sorption analyses revealed the preservation of the textural properties of the support as well as accessibility of the channel system despite sequential reduction in surface area, pore volume and pore size. Elemental analyses showed the presence of 0.15 mmol molybdenum and 0.09 mmol tungsten per gram of the catalyst, respectively. Epoxidation of olefins in the presence of M (Mo, W)O(2)dppb@AmpMCM-41 with tert-butyl hydroperoxide (TBHP) and hydrogen peroxide were examined. 2012 JNS All rights reserved

引用

页码：111 / 118

页数：8

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