Standard enthalpies of formation of cerium gallides by high temperature reaction calorimetry

被引：2

作者：

Babu, R

Nagarajan, K ^{[1
]}

Venugopal, V

机构：

[1] Indira Gandhi Ctr Atom Res, Div Fuel Chem, Kalpakkam 603102, Tamil Nadu, India

[2] Bhabha Atom Res Ctr, Div Fuel Chem, Trombay 400085, Mumbai, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 316卷 / 1-2期

关键词：

intermetallics; rare earth alloys and compounds; thermodynamic properties; calorimetry; hydrogen storage materials;

D O I：

10.1016/S0925-8388(00)01494-8

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：

The standard enthalpies of formation (Delta H-f(298.15)0) of Ce3Ga2, CeGa, CeGa2 and CeGa6 at 298.15 were determined by high temperature liquid gallium solution calorimetry to be -(71.1+/-2.7), -(84.1+/-1.9), -(51.5+/-1.4) and -(48.2+/-3.7) kT gatom(-1) respectively. The enthalpies of formation of Ce0.21Ga0.79 at 1125 K and CeGa6 at 876 K were determined by using precipitation calorimetry to be -(36.7+/-2.9) and -(52.8+/-3.0) kT gatom(-1). The partial enthalpies of solution of cerium in liquid gallium at infinite dilution (Delta(H) over bar (infinity)(Ce)) at 874 K and 1094 K were determined to be -(186.4+/-5.4) and -(213.0+/-3.7) kT gatom(-1) respectively. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：159 / 168

页数：10

共 16 条

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