Preparation and characterization of nanometer perovskite-type complex oxides LaMnO3.15 and their application in catalytic oxidation

被引：19

作者：

Hu, ZG ^{[1
]}

Yang, YY ^{[1
]}

Shang, XL ^{[1
]}

Pang, HL ^{[1
]}

机构：

[1] NW Normal Univ, Key Lab Polymer, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 11期

关键词：

nanoparticles; perovskite; preparation; grafted starch; catalytic oxidation;

D O I：

10.1016/j.matlet.2004.12.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LaMnO3+delta nanocrystalline powders were prepared using a new method in which the insoluble carboxyl-containing grafted starch copolymer (ISC) with a 3D tangled network was used to adsorb metal ions by carboxyl and form precursors. The structural components in the ISC and the precursors were identified from Fourier transform infrared spectra (FT-IR) of the samples. Thermogravimetric-differential thermal analysis (TG-DTA) for the precursors gave the detail of their decomposition in the dry air. The crystalline phase of LaMnO3.15 was characterized by X-ray diffraction (XRD). The shape and size distribution of particles were observed by transmission electron microscopy (TEM). The resultant nanoparticles were firstly used as catalysts for selective oxidation in solution and exhibited evidently catalytic activity for oxidation of cinnamaldehyde at moderate temperatures. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1373 / 1377

页数：5

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