Description

Aluminum Oxide-Chromium Oxide CAS NO 57921-51-4 is a high-performance, mixed metal oxide material known for its exceptional thermal stability and catalytic properties. This compound is critical for industrial processes requiring robust, high-surface-area materials that can withstand extreme environments. It is primarily utilized by manufacturers in the catalyst, refractory, and advanced ceramics sectors for applications demanding superior chemical resistance and durability.

Application

• Catalyst Support and Catalyst Formulation: Widely used as a support material or active component in heterogeneous catalysts for dehydrogenation, hydrogenation, and other petrochemical processes.
• Refractory and High-Temperature Materials: A key ingredient in the production of advanced refractories, furnace linings, and thermal barrier coatings due to its excellent resistance to thermal shock and corrosion.
• Advanced Structural Ceramics: Employed in the manufacture of wear-resistant components, cutting tools, and engineering ceramics where hardness and chemical inertness are paramount.
• Pigments and Coatings: Serves as a durable, heat-stable inorganic pigment for coloring ceramics, glasses, and high-temperature paints.
• Abrasive and Polishing Compounds: Used in specialized abrasive blends and polishing slurries for precision finishing of metals and hard materials.
• Sensor and Electronic Ceramics: Acts as a functional material in certain gas sensors and electronic components due to its stable electrical properties at elevated temperatures.

Basic Information

Product Name	Aluminum Oxide-Chromium Oxide
CAS No.	57921-51-4
Molecular Formula	Al2O3·Cr2O3 (Mixed Oxide)
Molecular Weight	Contact for details
Synonyms	Aluminum Chromium Oxide; Chromia-Alumina; Alumina-Chromia; Chromium Aluminum Oxide; Al2O3-Cr2O3; Mixed Aluminum Chromium Oxide; Catalyst Support Al-Cr Oxide
EINECS	Contact for details

Quality Control

Our Aluminum Oxide-Chromium Oxide is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent composition, particle size distribution, and chemical purity. Certificates of Analysis (COA) detailing specific parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container sealed to protect the material from moisture absorption and contamination.

Specification

Item	Specification
Appearance	Green to dark green powder
Identification (XRD)	Complies
Assay (Al2O3 + Cr2O3)	≥ 98.0 %
Particle Size (D50)	1 - 10 µm (or as specified)
Specific Surface Area (BET)	50 - 200 m²/g
Loss on Drying (LOD)	≤ 2.0 %
Heavy Metals (as Pb)	≤ 50 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.