Preparation and characterization of MgO powders obtained from different magnesium salts and the mineral dolomite

被引：121

作者：

Alvarado, E

Torres-Martinez, LM

Fuentes, AF

Quintana, P ^{[1
]}

机构：

[1] IPN, CINVESTAV, Unidad Merida, Km 6 Antigua Carretera Progreso, Merida 97310, Yucatan, Mexico

[2] UANL, DES, Fac Ciencias Quim, Monterrey, NL, Mexico

来源：

POLYHEDRON | 2000年 / 19卷 / 22-23期

关键词：

magnesia; dolomite; crystallite size; degree of agglomeration; X-ray diffraction; SEM;

D O I：

10.1016/S0277-5387(00)00570-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The characterisation of the physical properties of MgO powders, obtained from three commercial magnesium compounds, MgSO4. 7H(2)O, MgNO3. 6H(2)O and Mg(CH3CO(2))(2). 4H(2)O and the mineral dolomite (natural source from Mexico), synthesised by chemical precipitation, is presented. The decomposition of the precipitated Mg(OH)(2) was analysed by DTA/TGA and the crystallisation process was observed by XRD. The variation of the properties with the nature of the precursors at 960 degreesC was studied: as the crystallite size, density, specific surface area, degree of agglomeration, and the total porosity. The microstructural differences between the MgO agglomerates were examined by SEM, at different temperatures. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：2345 / 2351

页数：7

共 21 条

[1] Structural and morphological features of MgO powders. The key role of the preparative starting compound [J].