Estimation of the Standard Free Energy of Formation of Bastnasite, REFCO3

Research output: Contribution to journalArticle

Abstract

The standard Gibbs free energy of formation (ΔGo f, 298) of bastnasite, (Ce, La, Nd, Pr)FCO3, was estimated using four different methods. The obtained average values were − 1589.5 kJ/mol for CeFCO3, − 1599.5 kJ/mol for LaFCO3, − 1589.1 kJ/mol for NdFCO3, and − 1595.4 kJ/mol for PrFCO3. The value for cerium bastnasite, CeFCO3, was used to construct a potential vs. pH (Eh-pH) diagram to investigate the stability relations of cerium bastnasite. The diagram shows that CeFCO3 is stable in neutral to basic conditions (pH ~ 6.5–11).

Original languageEnglish (US)
Pages (from-to)227-233
Number of pages7
JournalMining, Metallurgy and Exploration
Volume36
Issue number1
DOIs
StatePublished - Feb 1 2019

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Cerium
cerium
Free energy
diagram
Gibbs free energy
energy
method

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Chemistry(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "Estimation of the Standard Free Energy of Formation of Bastnasite, REFCO3",
abstract = "The standard Gibbs free energy of formation (ΔGo f, 298) of bastnasite, (Ce, La, Nd, Pr)FCO3, was estimated using four different methods. The obtained average values were − 1589.5 kJ/mol for CeFCO3, − 1599.5 kJ/mol for LaFCO3, − 1589.1 kJ/mol for NdFCO3, and − 1595.4 kJ/mol for PrFCO3. The value for cerium bastnasite, CeFCO3, was used to construct a potential vs. pH (Eh-pH) diagram to investigate the stability relations of cerium bastnasite. The diagram shows that CeFCO3 is stable in neutral to basic conditions (pH ~ 6.5–11).",
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Estimation of the Standard Free Energy of Formation of Bastnasite, REFCO3 . / Al-Nafai, Isehaq; Kim, Hojong; Osseo-Asare, Kwadwo Asare.

In: Mining, Metallurgy and Exploration, Vol. 36, No. 1, 01.02.2019, p. 227-233.

Research output: Contribution to journalArticle

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