Thermal analysis of repa-germanium (Ge-132)

被引：8

作者：

Batalu, D. ^{[1
]}

Paun, A. ^{[1
]}

Ferbinteanu, M. ^{[2
]}

Aldica, G. ^{[3
]}

Vlaicu, A. M. ^{[3
]}

Teodorescu, V. S. ^{[3
]}

Badica, P. ^{[3
]}

机构：

[1] Univ Politehn, Fac Mat Sci & Engn, Splaiul Independentei 313, Bucharest 060042, Romania

[2] Univ Bucharest, Dept Inorgan Chem, Dumbrava Rosie 23, Bucharest 020462, Romania

[3] Natl Inst Mat Phys, Atomistilor 405A, Magurele 077125, Romania

来源：

THERMOCHIMICA ACTA | 2016年 / 644卷

关键词：

C6H10Ge2O7 (Ge-132); Isomerization; Thermal transformations; Ge; GeO2; Amorphous; ORGANIC GERMANIUM; COMPLEXES; SESQUIOXIDE; COMPOUND; GEO2;

D O I：

10.1016/j.tca.2016.10.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermal behavior of repa-germanium (C6H10Ge2O7, Ge-132) during heating in air or in argon is investigated using DSC-TGA, XRD, SEM,TEM, and FT-IR measurements. Nine domains of thermal transformations were identified from room temperature to 1200 degrees C, in air or argon. The first reversible transformation is below 220 degrees C and it was assigned to an isomerization process, based on DSC, XRD and IR measurements. The next five transformation domains (220-910 degrees C) are decompositions accompanied by weight loss. The main product of thermal decomposition is Ge. The next transformation domain (910-970 degrees C) corresponds to melting of Ge, both in argon and air. In the air, this step is followed by oxidation of Ge (970-1100 degrees C) and, finally, by melting of GeO2. Amorphous phases formed between 220 and 720 degrees C. Observed processes are discussed based on crystal chemistry and bonds dynamics considerations. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：20 / 27

页数：8

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