Synthesis and characterization of nanocrystalline MnFe2O4:: advances in thermochemical water splitting

被引：50

作者：

Alvani, C

Ennas, G

La Barbera, A

Marongiu, G

Padella, F

Varsano, F

机构：

[1] Univ Cagliari, Dipartimento Sci Chim, I-09042 Cagliari, Italy

[2] ENEA CR Casaccia, I-00060 Rome, Italy

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2005年 / 30卷 / 13-14期

关键词：

ball milling; manganese ferrite; nanocrystalline materials; hydrogen production;

D O I：

10.1016/j.ijhydene.2004.10.020

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：

Nanostructured MnFe2O4 was prepared by high-energy ball milling of a stoichiometric mixture of MnO and Fe2O3 powders and characterized by XRD, TEM and TGA techniques. The ball milling process leads to strained nanocrystals with an average size of about 5 nm, agglomerated in sizes of about 100 nm. It was used with mechanically activated Na2CO3 to produce hydrogen from water in the temperature range 973-1073 K. At 1023 K the mixture shows a hydrogen production five times higher than that obtained with manganese ferrite prepared by thermally activated solid-state reaction. (c) 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：1407 / 1411

页数：5

共 13 条

[1]

BROWN LC, 2000, GAA233343 DOE NUCL E

[2] COMPARATIVE EXPERIMENTAL INVESTIGATIONS OF THE WATER-SPLITTING REACTION WITH IRON-OXIDE FE1-YO AND IRON-MANGANESE OXIDES (FE1-XMNX)(1-Y)O [J].