Oxide melt solution calorimetry of rare earth oxides. Techniques, problems, cross-checks, successes

K. B. Helean, A. Navrotsky

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Key to the evaluation of the long-term durability and reactivity of REE-materials is the accurate determination of their thermodynamic properties. High-temperature oxide melt solution calorimetry offers an effective methodology for the determination of enthalpies of formation for REE-materials. Calorimetric techniques and crosschecks are summarized that demonstrate that consistent and correct thermodynamic data can be generated using lead borate and sodium molybdate solvents. A summary of recent calorimetric studies of REE-orthophosphates and REE-oxyapatites illustrates the successful application of our techniques in quantifying formation enthalpies and elucidating energetic trends.

Original languageEnglish (US)
Pages (from-to)751-771
Number of pages21
JournalJournal of Thermal Analysis and Calorimetry
Volume69
Issue number3
DOIs
StatePublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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