Lanthanum thermodynamic properties

Lanthanum Thermodynamic Properties, Chemical Equilibria, and Standard Potentials... 

Tanasescu S, Orasanu A, Berger D, Jitaru I, and Shoonman J. Electrical conductivity and thermodynamic properties of some alkaline earth-doped lanthanum chromites. Int. J. Thermophysics 2005 26 543-557. 

Experimental thermodynamic information is not available on solid yttrium selenides, but Mills [74M1L] has estimated thermodynamic properties for YSe(cr) and Y2Se3(cr) by comparison with the yttrium sulphides and lanthanum selenides. No values for solid selenides were selected by the review. 

Roszak, S., Balasubramanian, K., Theoretical investigation of structural and thermodynamic properties of lanthanum carbides LaCn (n= 2-6), J. Chem. Phys., 106, (1997), 158-164. Cited on page 346. 

Thermodynamic properties of yttrium, lanthanum and the lanthanide elements and ions. L. R. Morss, Chem. Rev., 1976,76,827-841 (149). 

The thermodynamic study of rare earth dicarbide systems is essential in rmderstanding the chemical state of fission products in the mixed carbide fuels used in fast breeder reactors. Thermodynamic properties of one such carbide, lanthanum dicarbide (LaC2) in the temperature range 1263-1543 K have been determined by using the new method referred to above. 

This review will be limited to certain thermodynamic properties of gaseous species of the elements yttrium, scandium, and lanthanum to lutetium. The dissociation enthalpies and enthalpies of formation are the two quantities which are evaluated and tabulated for all the species considered here. There have been two recent reviews by Gingerich (1980a, 1985) on this subject and should be referred to for literature references. In this review, the values reported in the literature have been recalculated in a large number of cases using newer data for reference systems. 

Americium metal has been prepared by the following methods (1) reduction of AmF3 with barium (or lithium) metal (2) reduction of Am02 with lanthanum metal (3) bomb reduction of AmF4 with calcium metal (4) thermal decomposition of Pts Am. Lanthanum reduction of Am02 in tantalum equipment and subsequent distillation of the americium metal from the reaction mixture yields americium of very high (>99.9%) purity. There is about 10 -fold difference in americium-lanthanum volatility. Extensive application of this technique by the Euratom group has led to important new measurements of the physical properties and thermodynamic properties of americium metal [81,342], Rocky Flats workers have reported similar success with vacuum distillation [333]. 

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