Solubility of Palladium in Alumina-Iron Silicate Melts

Katri Avarmaa; Lassi Klemettinen; Hugh O’Brien; Ari Jokilaakso; Daniel Lindberg; Pekka Taskinen

doi:10.1007/s11837-021-04672-4

Solubility of Palladium in Alumina-Iron Silicate Melts

Katri Avarmaa, Lassi Klemettinen, Hugh O’Brien, Ari Jokilaakso, Daniel Lindberg, Pekka Taskinen^*

^*Corresponding author for this work

Geological Survey of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

1 Citation (Scopus)

79 Downloads (Pure)

Abstract

Dissolution and solubility of palladium in iron silicate melts saturated with alumina–iron spinel at 1300°C has been measured using an equilibration-drop quenching technique combined with electron probe microanalysis and laser ablation–inductive coupled plasma–mass spectrometry analysis from polished sections. Composition of the resulting Fe-Pd alloy allowed estimation of the activity of palladium at different oxygen partial pressures, and, thus, the solubilities of palladium in the studied slags in conditions typical of copper and nickel smelting as well as slag cleaning at p_O2=10^-5 to 10^-10 atm. The mechanism of palladium dissolution in the studied iron silicate slags was oxidation by formation of the monovalent oxide species PdO_0.5 over the entire oxygen activity range of this study. Testing the applicability of the various palladium isotopes for quantitative analyses of Pd in these types of matrices resulted in a good fit of measured concentrations of ¹⁰⁴Pd and ¹⁰⁵Pd with interference-corrected ¹⁰⁶Pd and ¹⁰⁸Pd.

Original language	English
Pages (from-to)	1871-1877
Number of pages	7
Journal	JOM
Volume	73
Issue number	6
Early online date	23 Apr 2021
DOIs	https://doi.org/10.1007/s11837-021-04672-4
Publication status	Published - Jun 2021
MoE publication type	A1 Journal article-refereed

Access to Document

10.1007/s11837-021-04672-4Licence: CC BY

CHEM_Avarmaa_et_al_Solubility_of_Palladium_2021_JOMFinal published version, 943 KBLicence: CC BY

Cite this

@article{39c329504e16478a8b1007a1a886e1ac,

title = "Solubility of Palladium in Alumina-Iron Silicate Melts",

abstract = "Dissolution and solubility of palladium in iron silicate melts saturated with alumina–iron spinel at 1300°C has been measured using an equilibration-drop quenching technique combined with electron probe microanalysis and laser ablation–inductive coupled plasma–mass spectrometry analysis from polished sections. Composition of the resulting Fe-Pd alloy allowed estimation of the activity of palladium at different oxygen partial pressures, and, thus, the solubilities of palladium in the studied slags in conditions typical of copper and nickel smelting as well as slag cleaning at pO2=10-5 to 10-10 atm. The mechanism of palladium dissolution in the studied iron silicate slags was oxidation by formation of the monovalent oxide species PdO0.5 over the entire oxygen activity range of this study. Testing the applicability of the various palladium isotopes for quantitative analyses of Pd in these types of matrices resulted in a good fit of measured concentrations of 104Pd and 105Pd with interference-corrected 106Pd and 108Pd.",

author = "Katri Avarmaa and Lassi Klemettinen and Hugh O{\textquoteright}Brien and Ari Jokilaakso and Daniel Lindberg and Pekka Taskinen",

note = "Funding Information: Financial support by CMEco (Grant # 7405/31/2016) and SYMMET (Grant # 3891/31/2018) programs of Business Finland are gratefully acknowledged. Additional funding from the Alfred Kordelin Foundation, Finnish Cultural Foundation as well as the Emil Aaltonen Foundation (KA), and the Finnish Steel and Metals Producers{\textquoteright} Fund (LK) is also appreciated. The EPMA measurements were carried out by Mr. Lassi Pakkanen of the Geological Survey of Finland. This study utilized the Academy of Finland{\textquoteright}s RawMatTERS Finland Infrastructure (RAMI) housed at Aalto University, GTK and VTT. Publisher Copyright: {\textcopyright} 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jun,

doi = "10.1007/s11837-021-04672-4",

language = "English",

volume = "73",

pages = "1871--1877",

journal = "JOM",

issn = "1047-4838",

publisher = "Springer",

number = "6",

}

TY - JOUR

T1 - Solubility of Palladium in Alumina-Iron Silicate Melts

AU - Avarmaa, Katri

AU - Klemettinen, Lassi

AU - O’Brien, Hugh

AU - Jokilaakso, Ari

AU - Lindberg, Daniel

AU - Taskinen, Pekka

N1 - Funding Information: Financial support by CMEco (Grant # 7405/31/2016) and SYMMET (Grant # 3891/31/2018) programs of Business Finland are gratefully acknowledged. Additional funding from the Alfred Kordelin Foundation, Finnish Cultural Foundation as well as the Emil Aaltonen Foundation (KA), and the Finnish Steel and Metals Producers’ Fund (LK) is also appreciated. The EPMA measurements were carried out by Mr. Lassi Pakkanen of the Geological Survey of Finland. This study utilized the Academy of Finland’s RawMatTERS Finland Infrastructure (RAMI) housed at Aalto University, GTK and VTT. Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6

Y1 - 2021/6

N2 - Dissolution and solubility of palladium in iron silicate melts saturated with alumina–iron spinel at 1300°C has been measured using an equilibration-drop quenching technique combined with electron probe microanalysis and laser ablation–inductive coupled plasma–mass spectrometry analysis from polished sections. Composition of the resulting Fe-Pd alloy allowed estimation of the activity of palladium at different oxygen partial pressures, and, thus, the solubilities of palladium in the studied slags in conditions typical of copper and nickel smelting as well as slag cleaning at pO2=10-5 to 10-10 atm. The mechanism of palladium dissolution in the studied iron silicate slags was oxidation by formation of the monovalent oxide species PdO0.5 over the entire oxygen activity range of this study. Testing the applicability of the various palladium isotopes for quantitative analyses of Pd in these types of matrices resulted in a good fit of measured concentrations of 104Pd and 105Pd with interference-corrected 106Pd and 108Pd.

AB - Dissolution and solubility of palladium in iron silicate melts saturated with alumina–iron spinel at 1300°C has been measured using an equilibration-drop quenching technique combined with electron probe microanalysis and laser ablation–inductive coupled plasma–mass spectrometry analysis from polished sections. Composition of the resulting Fe-Pd alloy allowed estimation of the activity of palladium at different oxygen partial pressures, and, thus, the solubilities of palladium in the studied slags in conditions typical of copper and nickel smelting as well as slag cleaning at pO2=10-5 to 10-10 atm. The mechanism of palladium dissolution in the studied iron silicate slags was oxidation by formation of the monovalent oxide species PdO0.5 over the entire oxygen activity range of this study. Testing the applicability of the various palladium isotopes for quantitative analyses of Pd in these types of matrices resulted in a good fit of measured concentrations of 104Pd and 105Pd with interference-corrected 106Pd and 108Pd.

UR - http://www.scopus.com/inward/record.url?scp=85105194077&partnerID=8YFLogxK

U2 - 10.1007/s11837-021-04672-4

DO - 10.1007/s11837-021-04672-4

M3 - Article

AN - SCOPUS:85105194077

SN - 1047-4838

VL - 73

SP - 1871

EP - 1877

JO - JOM

JF - JOM

IS - 6

ER -

Solubility of Palladium in Alumina-Iron Silicate Melts

Abstract

Access to Document

Other files and links

Fingerprint

SYMMET: Symbiosis of metals production and nature

CMEco: Circular Metal Ecosystem

Raw Materials Research Infrastructure

Cite this

Solubility of Palladium in Alumina-Iron Silicate Melts

Abstract

Access to Document

Other files and links

Fingerprint

Projects

SYMMET: Symbiosis of metals production and nature

CMEco: Circular Metal Ecosystem

Equipment

Raw Materials Research Infrastructure

Cite this