Instability of the CuCl2-NH3BH3 mixture followed by TGA and DSC

被引：9
作者：
Chiriac, R. [1 ]
Toche, F. [1 ]
Demirci, U. B. [2 ]
Miele, P. [2 ]
机构：
[1] Univ Lyon 1, CNRS, UMR 5615, Lab Multimat & Interfaces, F-69622 Villeurbanne, France
[2] Univ Montpellier 2, UMR 5635, IEM, CNRS,ENSCM, F-34095 Montpellier, France
来源：
THERMOCHIMICA ACTA | 2013年 / 567卷
关键词：
Ammonia borane; Copper chloride; Hydrogen generation; Stability; Thermolysis; AMMONIA-BORANE; THERMAL-DECOMPOSITION; HYDROGEN RELEASE; THERMOLYSIS; DEHYDROGENATION; STORAGE; NH3BH3;
D O I：
10.1016/j.tca.2012.11.028
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the field of 'hydrogen storage and generation', ammonia borane NH3BH3 (AB) destabilization can be achieved by adding a metal halide, here copper chloride (CuCl2). Improved dehydrogenation properties can be achieved with a fresh mixture of CuCl2-NH3BH3. Using a systematic approach, we followed the stability of the mixture using thermogravimetric analysis, differential scanning calorimetry and (micro) gas chromatography while it was stored under argon at room temperature over 6 months. The aged samples showed improved dehydrogenation properties compared to pristine AB. However, the performance deteriorated in comparison to the fresh mixture indicating that CuCl2-NH3BH3 evolves over time, decomposing with slow kinetics. This is detrimental in terms of stability during storage, making long-term storage of CuCl2 inconceivable for safety and performance reasons. This is discussed herein. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：100 / 106
页数：7
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