The metallic palladium-rhodium solution in interaction with oxygen: The Pd-Rh-O phase diagram and thermodynamics

C. Laurin, A. Quaini, E. Regnier, A. Laplace, T. Croze, S. Gossé

The Journal of Chemical Thermodynamics 172 106831 (2022) · Elsevier BV

DOI: 10.1016/j.jct.2022.106831

Data: JSON record · id doi:10.1016/j.jct.2022.106831 · metadata: crossref

Roles in ORCHID

• read by ORCHID (values extracted): 28 released values
• assessment behind a TDB file: PdO-22Lau.tdb (O–Pd), PdRh-22Lau.tdb (Pd–Rh), RhO-22Lau.tdb (O–Rh)
• discovery lead (found by Crossref assessment discovery, not read): rank 1418, score 79; systems named in title: O–Pd–Rh

Systems

O–Pd, O–Rh, Pd–Rh, O–Pd–Rh

Evidence in ORCHID

28 values read from this paper (7 accepted), from 2 tables and 1 text passages.

Phase-registry phases citing it: phase:o-pd:bcc-a2, phase:o-pd:fcc-a1, phase:o-pd:gas, phase:o-pd:hcp-a3, phase:o-pd:ion, phase:o-pd:o2gas, phase:o-pd:pdo-b17, phase:o-rh:bcc-a2, phase:o-rh:fcc-a1, phase:o-rh:gas, phase:o-rh:hcp-a3, phase:o-rh:ion, phase:o-rh:o2gas, phase:o-rh:rh2o3-d51, phase:o-rh:rho2-c4, phase:pd-rh:bcc-a2, phase:pd-rh:fcc-a1, phase:pd-rh:hcp-a3, phase:pd-rh:liquid

Availability

Read by ORCHID: yes (values_extracted). Open-access licence (Crossref license field): none deposited. Crossref is-referenced-by count: 3 (retrieved 2026-10-23).

Relations

Cited by (Crossref reference lists) (1)

• The SGTE collection of binary datasets (2025) [crossref_reference_list]

References (Crossref, publisher-deposited) (22)

• Measurement and regulation of oxygen content in gases using solid electrolyte cells. III. Oxygen pump-gauge (1975) [crossref_reference_list]
• Phase relations and gibbs energies in the system Mn-Rh-O (1994) [crossref_reference_list]
• Gibbs free energy of formation and heat capacity of PdO: A new calibration of the PdPdO buffer to high temperatures and pressures (1996) [crossref_reference_list]
• Formation and stability of the platinum and rhodium oxides at high oxygen pressures and the structures of Pt3O4, β-PtO2 and RhO2 (1968) [crossref_reference_list]
• Determination of the standard free energy of formation of PdO(s) from the solid oxide electrolyte e.m.f. (1983) [crossref_reference_list]
• Determination of the standard Gibbs energy of formation of Rh2O3(s) and IrO2(s) from solid oxide electrolyte electromotive force measurements (1985) [crossref_reference_list]
• Formation, dissociation and expansion behavior of platinum group metal oxides (PdO, RuO2, IrO2) (1975) [crossref_reference_list]
• Bildung und thermische stabilität von rhodium-oxiden (1976) [crossref_reference_list]
• Modification of the two-sublattice model for liquids (1991) [crossref_reference_list]
• Computer assessment of the palladium-rhodium system (1993) [crossref_reference_list]
• Thermodynamic assessment of the Pd Rh Ru system using calphad and first-principles methods (2016) [crossref_reference_list]
• Thermodynamic assessment of the rhodium-ruthenium-oxygen (Rh-Ru-O) system (2018) [crossref_reference_list]
• The Gibbs free energy of formation and heat capacity of β-Rh2O3 and MgRh2O4, the MgORhO phase diagram, and constraints on the stability of Mg2Rh 4+O4 (1997) [crossref_reference_list]
• Dissociation of Palladium Oxide¹ (1966) [crossref_reference_list]
• High-temperature heat capacity of palladinite PdO(c) (2011) [crossref_reference_list]
• The Free Energy of Formation of Palladium Oxide (1967) [crossref_reference_list]
• Thermodynamic mixing properties and solid-state immiscibility in the systems Pd-Rh and Pd-Rh-O (1998) [crossref_reference_list]
• System Nd-Pd-O: Phase diagram and thermodynamic properties of oxides using a solid-state cell with advanced features (1999) [crossref_reference_list]
• The Standard Enthalpy and Entropy of Formation of Rh2O3 - A Third-Law Optimization (2000) [crossref_reference_list]
• Die thermische Zersetzung des Rhodium(III)-oxids und deren Beeinflussung durch Legierungsbildung mit Platin und Palladium (1964) [crossref_reference_list]
• Freie Bildungsenthalpie von Rhodiumsesquioxid* (1969) [crossref_reference_list]
• Freie Bildungsenthalpie von Palladiumoxid* (1970) [crossref_reference_list]

Cites (values carry this citation) (11)

• The Free Energy of Formation of Palladium Oxide (1967) — 5 values [orchid_extraction]
• Gibbs free energy of formation and heat capacity of PdO: A new calibration of the PdPdO buffer to high temperatures and pressures (1996) — 3 values [orchid_extraction]
• System Nd-Pd-O: Phase diagram and thermodynamic properties of oxides using a solid-state cell with advanced features (1999) — 2 values [orchid_extraction]
• Freie Bildungsenthalpie von Palladiumoxid* (1970) — 2 values [orchid_extraction]
• Measurement and regulation of oxygen content in gases using solid electrolyte cells. III. Oxygen pump-gauge (1975) — 1 values [orchid_extraction]
• Determination of the standard free energy of formation of PdO(s) from the solid oxide electrolyte e.m.f. (1983) — 1 values [orchid_extraction]
• Formation, dissociation and expansion behavior of platinum group metal oxides (PdO, RuO2, IrO2) (1975) — 1 values [orchid_extraction]
• Dissociation of Palladium Oxide¹ (1966) — 1 values [orchid_extraction]
• High-temperature heat capacity of palladinite PdO(c) (2011) — 1 values [orchid_extraction]
• Thermodynamic mixing properties and solid-state immiscibility in the systems Pd-Rh and Pd-Rh-O (1998) — 1 values [orchid_extraction]
• Die thermische Zersetzung des Rhodium(III)-oxids und deren Beeinflussung durch Legierungsbildung mit Platin und Palladium (1964) — 1 values [orchid_extraction]

TDB files modelling its system (3)

• tdb:PdO-22Lau.tdb [sgte_tdb_header]
• tdb:PdRh-22Lau.tdb [sgte_tdb_header]
• tdb:RhO-22Lau.tdb [sgte_tdb_header]

Reassesses (cites an earlier assessment of the same system) (2)

• Thermodynamic assessment of the Pd Rh Ru system using calphad and first-principles methods (2016) [citation+same-system]
• Thermodynamic assessment of the rhodium-ruthenium-oxygen (Rh-Ru-O) system (2018) [citation+same-system]

Data papers used (11)

• The Free Energy of Formation of Palladium Oxide (1967) — 5 values [orchid_extraction]
• Gibbs free energy of formation and heat capacity of PdO: A new calibration of the PdPdO buffer to high temperatures and pressures (1996) — 3 values [orchid_extraction]
• System Nd-Pd-O: Phase diagram and thermodynamic properties of oxides using a solid-state cell with advanced features (1999) — 2 values [orchid_extraction]
• Freie Bildungsenthalpie von Palladiumoxid* (1970) — 2 values [orchid_extraction]
• Measurement and regulation of oxygen content in gases using solid electrolyte cells. III. Oxygen pump-gauge (1975) — 1 values [orchid_extraction]
• Determination of the standard free energy of formation of PdO(s) from the solid oxide electrolyte e.m.f. (1983) — 1 values [orchid_extraction]
• Formation, dissociation and expansion behavior of platinum group metal oxides (PdO, RuO2, IrO2) (1975) — 1 values [orchid_extraction]
• Dissociation of Palladium Oxide¹ (1966) — 1 values [orchid_extraction]
• High-temperature heat capacity of palladinite PdO(c) (2011) — 1 values [orchid_extraction]
• Thermodynamic mixing properties and solid-state immiscibility in the systems Pd-Rh and Pd-Rh-O (1998) — 1 values [orchid_extraction]
• Die thermische Zersetzung des Rhodium(III)-oxids und deren Beeinflussung durch Legierungsbildung mit Platin und Palladium (1964) — 1 values [orchid_extraction]