The energetics of La4LiAuO8

Tori Z. Forbes, Joshua A. Kurzman, Ram Seshadri, Alexandra Navrotsky

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

La4LiAuO8 is a stable Au3+ oxide that was recently examined as a possible model compound for the role of Au3+ in heterogeneous catalysis. Due to the paucity of thermodynamic data, the energetics of La4LiAuO8 and its likely decomposition product, LiLaO2, were investigated. The ΔHf-ox, of La4LiAuO8 and LaLiO2 are both exothermic at -187.7 ± 5.8 and -41.4 ± 9.6 kJ/mol, respectively. From the thermodynamic data, the decomposition temperature of La4LiAuO8 was calculated as either 979 ± 95 or 1331 ± 43 °C for the formation of LiLaO2 or Li2O, respectively. Thus, LiLaO2 is the expected decomposition product.

Original languageEnglish (US)
Pages (from-to)1188-1192
Number of pages5
JournalJournal of Materials Research
Volume26
Issue number10
DOIs
StatePublished - May 28 2011
Externally publishedYes

Keywords

  • Au
  • Calorimetry
  • Oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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