Synthesis of nanocrystalline MgO/MgAl2O4 spinel powders from industrial wastes

被引：51

作者：

Ewais, Emad M. M. ^{[1
]}

El-Amir, Ahmed A. M. ^{[1
]}

Besisa, Dina H. A. ^{[1
]}

Esmat, Mohamed ^{[2
]}

El-Anadouli, Bahgat E. H. ^{[3
]}

机构：

[1] CMRDI, RCMD, POB 87 Helwan, Cairo 11421, Egypt

[2] Beni Suef Univ, Fac Postgrad Studies Adv Sci, Mat Sci & Nanotechnol Dept, Bani Suwayf, Egypt

[3] Cairo Univ, Dept Chem, Fac Sci, Giza, Egypt

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 691卷

关键词：

MGO/MgAl2O4 spinel nanoparticles; Scrap; Co-precipitation method; Phase composition; Microstructure; Optical properties; MAGNESIUM ALUMINATE SPINEL; MGAL2O4; SPINEL; OPTICAL-PROPERTIES; OXIDE POWDERS; NEUTRON; NANOPARTICLES; ABSORPTION; COMPOSITE; SITES;

D O I：

10.1016/j.jallcom.2016.08.279

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：

This article reports a simple and cost-effective method to prepare ultrafine nanocrystalline MgO/MgAl2O4 spinel (M-MA) powders from industrial wastes arising from aluminium and magnesium scraps. M-MA precursor powders were calcined at different temperatures (650, 750, 850, 950, 1300-1500 degrees C). The calcined powders were characterized by XRD, FT-IR, DTA, FESEM, and HR-TEM. In particular, ultrafine MgO/MgAl2O3 powder was formed at a temperature of 650 degrees C with crystallite size of 4.8 nm and 7 nm, respectively, as determined by XRD. Optical properties of the M-MA spinel powders revealed that the optical reflectance is highly dependent on the calcination temperature. A simple and cost-effective method to obtain ultrafine MgO/MgAl2O4 nanocrystalline powders with expected unique properties was established. These synthesized spinel powders is a highly promised feedstock for refractory, ceramic and environmental applications. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：822 / 833

页数：12

共 58 条

[51]

Wajler A., 2008, CERAM SOC, V28, P2495

[52] ELECTRICAL-CONDUCTIVITY OF PURE AND FE-DOPED MAGNESIUM-ALUMINUM SPINEL [J].