Praseodymium (III, IV) Oxide (Pr6O11)

Categories Praseodymium, Rare earth

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Additional information

Item Number	OX59
Product Name	Praseodymium Oxide (Pr6O11)
CAS Number	12037-29-5
M. F.	Pr6O11
Purity	99%; 99,9%; 99.99%; 99.999% (REO)
Form*	P, ST

Description:

Praseodymium (III, IV) Oxide (Pr₆O₁₁) is a black-brown or dark green crystalline powder, representing a mixed-valence oxide of praseodymium (Pr³⁺ and Pr⁴⁺). It is the most stable praseodymium oxide under ambient conditions.

CAS No.: 12037-29-5
Molecular Weight: 1021.44 g/mol
Density: 6.50 g/cm³
Melting Point: ~2,200°C (3,992°F)
Solubility: Insoluble in water; soluble in strong acids.

Key Properties:

Mixed oxidation states (Pr³⁺/Pr⁴⁺) – Enhances catalytic activity
High thermal stability – Suitable for high-temperature applications
Semiconductor behavior – Used in electronic materials
Strong UV absorption – Useful in glass and coatings

Applications:

Glass & Ceramics Industry

Yellow-green colorant for glass, ceramics, and enamel (produces bright, stable colors).
Used in UV-blocking sunglasses and protective goggles.
Improves refractive index and durability in optical glass.

Catalysts & Chemical Processes

Oxidation catalyst in automotive exhaust systems (replaces platinum in some applications).
Used in methane combustion, water-gas shift reactions, and NOx reduction.
Enhances fuel cell and hydrogen production technologies.

Electronics & Energy Storage

Solid electrolyte material in fuel cells and oxygen sensors.
Used in dielectric ceramics for capacitors.
Research applications in battery electrodes (Li-ion) and supercapacitors.

Polishing & Abrasives

Key component in chemical-mechanical planarization (CMP) slurries for semiconductor wafer polishing.
Used in precision optics and LCD glass polishing.

Nuclear & Radiation Shielding

Potential use in neutron-absorbing materials for nuclear reactors.
Studied for radiation-resistant coatings.

Pigments & Coatings

Praseodymium-doped zircon (Pr-ZrSiO₄) – A high-stability yellow pigment for paints and ceramics.
Used in artistic glazes and high-temperature coatings.