The Gadolinium-Hydrogen System1
The Gadolinium-Hydrogen System1
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DOI：
10.1021/ja01587a003
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发表时间：
1956-03
影响因子：
15
通讯作者：
G. Sturdy;R. Mulford
中科院分区：
文献类型：
--
作者：
G. Sturdy;R. Mulford
压力-温度-组成数据的钆-氢系统。存在两种氢化物相，第一种是理想成分接近GdH_2的立方结构，第二种是理想成分接近GdHg的六方结构。这两种物质都存在于组成范围内。给出了Gd-H系的部分相图和X射线数据。焓变为-46.9千卡。从600 ~ 800 ℃下饱和氢的钆转化为缺氢的GdH_2的PTC数据中得到了每摩尔H_2的H_2_3 ~（-1）。本实验室对稀土元素的研究很感兴趣，原因有二。第一个简单的愿望是增加有关金属的基本知识的一般存储。第二个对我们的直接利益更重要的是，镧系元素的化学性质作为研究锕系元素的基础是非常有帮助的，因为它们具有相似性和类比性。本文所研究的特殊稀土氢化物已被证明是氢化钚的对应物。这里提出的数据大大加强了关于在
Pressure-temperature-composition data are presented for the gadolinium-hydrogen system. Two hydride phases exist, the first being a cubic structure of ideal composition close to GdH2, the second being a hexagonal structure of ideal composi-tion close to GdHg. Both hydrides exist over composition ranges. A partial phase diagram and X-ray data for the Gd-H system are presented. Anenthalpy change of—46.9 kcal. per mole of H2 is obtainedfrom the PTC data for the conver-sion of hydrogen-saturated gadolinium to hydrogen-deficient GdH2at temperatures from 600 to 800.Introduction.—The study of rare-earth hydrides is of interest to this Laboratory for two reasons. The first is simply the desire to add to the general store of fundamental knowledge concerning metallic hydrides. The second—more important to our immediate interests—is that the chemistry of the lanthanide elements has been very helpful as a basis for the study of the actinide elementsbecause of similarities and analogies. The particular rare-earth hydride which is the subject of this article has proved to be a counterpart of plutonium hy-dride. The data presented here greatly strengthen deductions as to the phase relationships in the