Chemical type
- Metal oxide; reducible oxide catalyst support
- Rare earth oxide
- Oxidized form of cerium compounds
- Cathodic inhibitor (in moderation)
Key properties
- Fluorite crystal structure
- Reversible Ce⁴⁺/Ce³⁺ redox cycle
- Capable of forming oxygen vacancies
- Strong metal–support interaction with Ru
- Forms at longer immersion times (e.g., 60 min) via oxidation of Ce(OH)₃ and Ce₂O₃
- Primarily contains Ce⁴⁺, leading to beige coating and increased thickness
- Insoluble and stable, but excess particles favor corrosion by increasing current demand
- Blocks reduction reactions but can accelerate corrosion in high concentrations
- Redox activity with Ce³⁺/Ce⁴⁺ equilibrium
- High oxygen mobility and storage capacity
- Lattice distortion influences oxygen vacancy concentration
- Thermal stability
- Morphology-dependent (nanospheres, spindle-like, nanowires, cubes)
- Catalyst support for Ru
- CO₂ activation via surface adsorption and formate/carbonate formation
- Promotes hydrogen spillover
- Component in self-healing coatings on aluminum
- Protects metal surfaces in aggressive electrolytes
- In fuel cells, solar cells, and catalytic applications (beyond corrosion)
- Catalyst for DMC synthesis from CO₂ and methanol
- CO₂ adsorption and activation
- Methanol activation to methoxy species
- Facilitates formation of key intermediates like CH₃OCOO
Classification by use
- Chemicals used as catalyst supports
- Chemicals used in redox catalysis
- Chemicals used in CO₂ activation
- Corrosion inhibitors for metals
- Oxidized inhibitors in protective layers
- Materials for catalytic and energy applications
- Catalysts in CO₂ conversion reactions
- Materials for oxygen vacancy engineering
- Nanostructured materials in hydrothermal synthesis
A trustworthy factory and manufacturer
Demei Chemical Technology Co., Ltd. is a modern high-tech enterprise integrating R&D, production, and sales. The company's founder, Dr. Arron, born in April 1975, graduated from the School of Mechanical Engineering at Yanshan University and has been engaged in research in the fields of mechanical engineering and chemical synthesis for many years. The company's products focus on the chemical industry, primarily dealing in chemical raw materials and chemical production machinery and equipment. With its strong technical capabilities, advanced production equipment, and strict quality management system, the company has earned the trust of customers worldwide.
- [Cite:1] A dual promotional effect of doping tantalum (Ta) in atomically dispersed Ru/CeO2 catalyst toward CO2 methanation: Enhanced associative adsorption of CO2 and activation of H2, Applied Catalysis O: Open, Volume 209, December 2025, 207077
- [Cite:2] Cerium Compounds Coating as a Single Self-Healing Layer for Corrosion Inhibition on Aluminum 3003, Sustainability, 2022, 14(22), 15056
- [Cite:3] Effect of lattice distortion of CeO2 on direct synthesis of dimethyl carbonate from CO2 and methanol, Journal of Fuel Chemistry and Technology, Volume 53, Issue 11, November 2025, Pages 1590-1602
