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LaNi_5由于具有独特的可逆吸氢性能,因而被认为是未来能源中一种最有希望的储氢材料,近年来,无论对其吸氢能力、表面结构以及氢在LaNi_5氢化物中的位置等都进行了广泛的研究,而且,LaNi_5中的氢是以原子态存在的,具有较高的催化加氢活性,因此,也引起了国内外催化工作者的普遍重视,关于LaNi_5表面性质的研究,文献上已有关于LaNi_5表面组成随充氢次数改变的报道,本文介绍用XPS研究LaNi_5在氢气氛中加热处理时表面组成变化的结果。
LaNi_5 is considered as one of the most promising hydrogen storage materials in the future due to its unique reversible hydrogen-absorbing property. In recent years, LaNi_5, both its hydrogen absorption capacity, surface structure and its position in LaNi_5 hydride Has been extensively studied. Moreover, hydrogen in LaNi_5 exists in an atomic state and has a high catalytic hydrogenation activity. Therefore, it also attracts a great deal of attention from catalytic workers at home and abroad. Regarding the study on the surface properties of LaNi_5, the literature On the LaNi_5 surface composition with changes in the number of hydrogen filled reports, this article describes the use of XPS study of LaNi_5 in the hydrogen atmosphere heat treatment when the surface composition changes results.