THERMODYNAMICS OF RARE-EARTH-CARBON SYSTEMS .I. CERIUM-CARBON SYSTEM

被引：44

作者：

BALDUCCI, G

CAPALBI, A

DEMARIA, G

GUIDO, M

机构：

[1] Laboratorio di Chimica Dette Alte Temperature, Islituto di Chimica Fisica, Università di Roma, Roma

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 50卷 / 05期

关键词：

D O I：

10.1063/1.1671316

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 gaseous phase in thermodynamic equilibrium with the condensed cerium-carbon system has been investigated by means of the combined Knudsen-cell-mass-spectrometric technique in the temperature range 1990°-2300°K. In addition to cerium atoms, the gaseous carbide molecules CeC2 and CeC4 were identified and their partial pressures measured. Using this information, the following dissociation and atomization energies were derived: D0°= 162±2 kcal/mole for the Ce-C2 bond energy in CeC2; ΔH0° = 304.S±1.5 kcal/mole for the atomization energy of CeC2; ΔH0°=609±5 kcal/mole for the atomization energy of CeC4.

引用

页码：1969 / &

共 34 条

[1]

AVERY DF, 1967, BRIT J APPL PHYS, V18, P1133

[2] TETRACARBIDE MOLECULES IN VAPOR PHASE OVER RARE-EARTH-GRAPHITE SYSTEMS [J].