Stability studies on undoped and doped Mg2TiO4, obtained by the polymeric precursor method

被引：18

作者：

Silva, MRS

Souza, SC

Santos, IMG

Cassia-Santos, MR

Soledade, LEB

Souza, AG

Lima, SJG

Longo, E

机构：

[1] Univ Fed Paraiba, CCEN, Dept Quim, LTM, BR-58059900 Joao Pessoa, Paraiba, Brazil

[2] Univ Fed Paraiba, Lab Solidificacao Rapida, CT, BR-58059900 Joao Pessoa, Paraiba, Brazil

[3] Univ Fed Sao Carlos, Dept Quim, LIEC, BR-13560 Sao Carlos, SP, Brazil

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2005年 / 79卷 / 02期

关键词：

magnesium titanate; polymeric precursor method; spinel; thermal analysis;

D O I：

10.1007/s10973-005-0077-z

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Mg2TiO4 was synthesized by the polymeric precursor method, was doped with 1 mol% of Mn2+, Fe2+ or Co2+. The powder precursors were characterized by TG/DTA methods. The mass loss took place in three steps. In the first one water and adsorbed gases were released while the second and third step were representative to the decomposition of the organic substance. The DTA experiments indicated the combustion as well as the decomposition and recrystallization of Mg2TiO4 between 800 and 1200 degreesC. XRD results indicated that spinel (AB(2)O(4)) which have been observed at 600 degreesC transformed to ilmenite (MgTiO3) over 800 degreesC.

引用

页码：421 / 424

页数：4