Investigation of the First Hydrogenation of LaNi5

Reactions Pub Date : 2024-07-02 DOI:10.3390/reactions5030021
Salma Sleiman, Samaneh Shahgaldi, J. Huot
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Abstract

The first hydrogenation of most metal hydrides is a lengthy process that usually requires high pressure and temperature. This, in turn, significantly increases the production cost of metal hydrides. In this paper, the low temperature hydride-forming LaNi5 was selected to investigate the mechanism of first hydrogenation. For the first time, the effect of particle size, temperature and pressure on the incubation time were studied. We found that the first hydrogenation of LaNi5 follows an Arrhenius process, with an activation energy of EA = 78 ± 4 kJ/mol H2. We also found that the pre-exponential factor depends on the applied pressure.
LaNi5 的首次氢化研究
大多数金属氢化物的首次氢化是一个漫长的过程,通常需要高压和高温。这反过来又大大增加了金属氢化物的生产成本。本文选择了低温成氢化物的 LaNi5 来研究其首次氢化的机理。首次研究了粒度、温度和压力对培养时间的影响。我们发现 LaNi5 的首次氢化遵循阿伦尼乌斯过程,活化能为 EA = 78 ± 4 kJ/mol H2。我们还发现,预指数取决于施加的压力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.70
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0.00%
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