Studies of mixed hydrides based on Mg and Ca by reactive ball milling

被引：9

作者：

Sartori, Sabrina ^{[1
]}

Leon, Aline ^{[2
]}

Zabara, Oleg ^{[2
]}

Muller, Jiri

Fichtner, Maximilian ^{[2
]}

Hauback, Bjorn C.

机构：

[1] Inst Energy Technol, Dept Phys, NO-2027 Kjeller, Norway

[2] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 476卷 / 1-2期

关键词：

Hydrogen storage materials; Reactive milling; Alanates; THERMAL-DECOMPOSITION; CRYSTAL-STRUCTURE; MECHANOCHEMICAL ACTIVATION; HYDROGEN-EXCHANGE; ALUMINUM HYDRIDES; MG(ALH4)(2); MAGNESIUM; TETRAHYDROALUMINATE; DEHYDROGENATION; STABILITY;

D O I：

10.1016/j.jallcom.2008.09.112

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：

Combinations of alkali, alkaline earth hydrides and alanates or aluminium were ball milled under high hydrogen pressures (100 bar). Powder X-ray diffraction, volumetric measurements and dynamic high-pressure differential scanning calorimetry, (HP-DSC) were used in order to explore reaction mechanisms, formation of new phases and provide answers to the question of reversibility. Ball milling parameters, in particular the milling speed, were found to be important for the reaction paths. Among the studied systems, the formation of new unidentified peaks, however with lack in reversibility, has been found in the mixtures Mg-Al-Ca-H, Ca-Al-Li-H and Ca-Al-Na-H. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：639 / 643

页数：5

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