A novel method to synthesize Cr2O3 nanopowders using EDTA as a chelating agent

被引：33

作者：

Aghaie-Khafri, M. ^{[1
]}

Lafdani, M. H. Kakaei ^{[1
]}

机构：

[1] KN Toosi Univ Technol, Fac Mech Engn, Tehran, Iran

来源：

POWDER TECHNOLOGY | 2012年 / 222卷

关键词：

Nanopowders; Oxide materials; Sol-gel processes; X-ray diffraction; SOLID THERMAL-DECOMPOSITION; CHROMIA NANOPARTICLES; OXIDE; COATINGS; SORPTION; SINGLE;

D O I：

10.1016/j.powtec.2012.02.024

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Chromium oxide nanopowders were successfully synthesized using Ethylenediaminetetraacetic acid (EDTA) as a chelating agent. The effects of process parameters such as pH and temperature were investigated. Cr2O3 nanopowders were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area measurements, differential thermal analysis (DTA) and Fourier transformed infrared (FT-IR) spectroscopy. The synthesized nanopowders were non-agglomerated and spherical. The surface area of Cr2O3 nanopowders was 81.05 m(2)/g. This is greater than one obtained by citrate gel method. The conditional formation constants for various species of EDTA were calculated. Furthermore, the major equations of the production of chromium-EDTA were derived. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：152 / 159

页数：8

共 33 条

[1] Structural and catalytic activity studies of silver/chromia catalysts [J].