The contributions to this volume focus on selected chemical aspects
of rare-earth materials. The topics covered range from a basic
treatment of crystalline electric-field effects and chemical
interactions in organic solvents, to separation processes,
electrochemical beaviors which impact corrosion, oxidation
resistance, chemical energy storage and sensor technology, and to
analytical procedures.
Underlying the most subtle chemical and optical properties of
these elements and their compounds in the condensed state are the
crystal field effects. This phenomenon in non-metallic compounds is
discussed in chapter six. The volume opens with a review of
important new solvent extraction procedures as well as emerging
alternative separation processes such as photochemical separation,
precipitation stripping and supercritical extraction. Scientific
and industrial procedures are illustrated. In a further chapter
eight major analytical techniques of obtaining accurate trace
analysis are examined, tabulated and assessed. The most effective
procedures of each are also reviewed. Chapter two considers a wide
variety of methods using rare-earth solutions and slats to modify
advantageously the costly deterioration of metals and alloys. This
topic is expanded in the following chapter, paying particular
attention to protection against high-temperature oxidation,
sulfidization and hot-salt corrosion. The following two chapters
are concerned with the versatility of the rare earths in addressing
current technical problems such the use of rare-earth
intermetallics, principally LaNi3-based materials, to provide the
skyrocketing need for environmetally friendly, usually portable,
battery power. The final chapter is a review of the solvation,
interaction and coordination of rare-earth salts in a variety of
organic solvents including dimethylacetamide, dimethylsulfoxide,
various alcohols, acetonitrile and propylenecarbonate under strict
anhydrous conditions. A contrast of these interactions with those
in which water is present with organic solvents is also made.
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