Magnetic nanoparticle supported polyoxometalate: An efficient and reusable catalyst for solvent-free synthesis of α-aminophosphonates

被引：62

作者：

Hamadi, H. ^{[1
]}

Kooti, M. ^{[1
]}

Afshari, M. ^{[1
]}

Ghiasifar, Z. ^{[2
]}

Adibpour, N. ^{[3
]}

机构：

[1] Shahid Chamran Univ, Coll Sci, Dept Chem, Ahvaz 6135743169, Iran

[2] Islamic Azad Univ, Dept Chem, Sci & Res Khouzestan Branch, Ahvaz, Iran

[3] Ahvaz Jundishpur Univ Med Sci, Sch Pharm, Dept Pharmacol & Toxicol, Ahvaz, Iran

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2013年 / 373卷

关键词：

Cobalt ferrite; alpha-Aminophosphonates; Magnetic nanoparticles; Surface functionalization; Phosphotungstic acid; COBALT FERRITE; ACID; NANOCATALYST; PARTICLES; SILICA;

D O I：

10.1016/j.molcata.2013.02.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new magnetically separable catalyst consisting of phosphotungstic acid (PTA) supported on imidazole functionalized silica coated cobalt ferrite nanoparticles was prepared. The synthesized catalyst was characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR), and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The immobilized phosphotungstic acid was shown to be an efficient heterogeneous catalyst for the synthesis of alpha-aminophosphonates under solvent-free conditions at room temperature. The catalyst is readily recovered by simple magnetic decantation and can be recycled several times with no significant loss of catalytic activity. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：25 / 29

页数：5

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