Aluminum oxide

Base Information

• Chemical Name: Aluminum oxide
• CAS No.: 1344-28-1
• Molecular Formula: Al2O3
• Molecular Weight: 101.961
• Hs Code.: 2818200000
• Mol file: 1344-28-1.mol

Synonyms:AD 998;AES 11C;AES 22S;AES-T;AF 115;AFL 204AB3;AG 507C;AGX (oxide);AHP 200(oxide);AKP 008;AKP 100;AKP 20;AKP 28;AKP 48 (oxide);AKP 53;AKP 700;AKP-G;AKP-G005;AKP-G 020;AKP-G 030;AKP-HP;AL 15-1;AL 15-2;AL 160SG-III;AL 160SG3;AL 160SG4;AL 200;AL 203-05;AL 203C;AL 20SD;AL23;AL 23 (oxide);AL31-03;AL 33;AL 3945E;AL 41;activated alumina;1067-2M;202P1;24A;272LA-A5;A 12 (metal oxide);A 12-4;A 1203C;A 13;A 13M;A 14 (alumina);A 152GR;A 152SG;A16;A 16SG;A 16UG;AA 03;AA 10;AA 2;AA 3;AA 400G;AC 11;AC 11K;AC 11R;Aluminium Hydroxide;

Chemical Property of Aluminum oxide

Chemical Property:

• Appearance/Colour: white odorless crystalline powder
• Melting Point: 2040 °C
• Refractive Index: 1.765
• Boiling Point: 2980 °C
• Flash Point: 2980°C
• PSA: 0.00000
• Density: 3.95-4.1 g/cm³
• LogP: 0.31860
• Water Solubility.: INSOLUBLE

Purity/Quality:

99.9% ^*data from raw suppliers

Safty Information:

• Pictogram(s): Xi,F
• Hazard Codes: Xi:
• Statements: R36/37/38:
• Safety Statements: S24/25:

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Use Description: Aluminum oxide, also known as alumina, is a versatile compound with a wide range of applications across various fields. In the field of materials science and engineering, it is extensively used as a high-strength ceramic material due to its exceptional hardness and resistance to wear and corrosion. Alumina is commonly employed as an abrasive in the manufacturing of grinding wheels, sandpapers, and cutting tools. In the electronics industry, it plays a pivotal role as an insulating material in the fabrication of semiconductors and integrated circuits, where its electrical insulating properties are highly valued. Additionally, alumina finds use in the field of aerospace, as it is utilized in the production of heat-resistant components for spacecraft and aircraft. Its roles and significance may vary, but aluminum oxide consistently proves its importance in enhancing materials' durability, electrical insulation, and thermal resistance across these diverse fields.
• Chemical Formula and Nature: Aluminum oxide, with the chemical formula Al2O3, is amphoteric, meaning it can act as both an acid and a base.
• Uses: Aluminum oxide finds extensive use in various chemical, industrial, and commercial applications. It serves as an indirect additive in food contact substances approved by the FDA.
• Properties: Aluminum oxide possesses high hardness and wear resistance, making it suitable for a range of applications. Its thermal, chemical, and physical properties make it advantageous compared to several other ceramic materials.
• Industrial Production: Approximately 45 million tons of aluminum oxide are produced globally each year, primarily through the Bayer method using bauxite. Of this production, about 40 million tons are consumed for refining aluminum, while approximately 5 million tons are used for various chemical-grade applications.
• Synthesis Methods: Various methods exist for synthesizing aluminum oxide, each with its advantages and disadvantages. These methods include precipitation, combustion, sol-gel, wet chemical, synthesis in supercritical water conditions, microwave, mechanochemical, and hydrolysis. Among these methods, precipitation is considered the most efficient due to its simplicity, use of inexpensive raw materials, low pollution, and ability to produce high-purity, thermally stable products with nearly homogeneous nanoparticle sizes.

Technology Process of Aluminum oxide

There total 697 articles about Aluminum oxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

aluminum isopropoxide (555-31-7) → aluminum oxide (1333-84-2,1344-28-1)

Guidance literature:

In water; isopropyl alcohol; toluene; at 265 ℃; for 14h; under 45004.5 - 75007.5 Torr;

Reference yield:

→ aluminum oxide (1333-84-2,1344-28-1)

Guidance literature:

at 500 ℃; for 30h; under 7.50075E-05 Torr; Purification / work up;

Reference yield:

ammonium hydroxide (1336-21-6) + aluminium trinitrate (7784-27-2) → aluminum oxide (1333-84-2,1344-28-1)

Guidance literature:

With water;

upstream raw materials:

aluminum isopropoxide

ammonium hydroxide

aluminium trinitrate

hydrogenchloride

Downstream raw materials:

aluminum oxide

Al₀₆₄₅Mg₀₃₅₅O_1.323

Al₀₇₁₂Mg₀₂₈₈O_1.356

Al₀₇₅₅Mg₀₂₄₅O_1.377

Refernces

10.1007/BF00909177

The study investigates the alkenylation of m-cresol by allyl alcohol using various acid catalysts, including phosphoric acid, zinc chloride deposited on aluminum oxide, and cationite KU-1. The researchers found that under certain conditions, the yield of alkenylation products could reach 47% of the theoretical value. The reaction products include isomeric allyl-m-cresols and 2,6-dimethylcoumaran. The study also explores the reaction mechanism, suggesting that the alkenylation proceeds via both C-alkenylation and O-alkenylation pathways, with the O-alkenylation product rearranging to form the ortho isomer and subsequently cyclizing to 2,6-dimethylcoumaran.

KF/Al2O3 as an efficient, green, and reusable catalytic system for the solvent-free synthesis of N-Alkyl derivatives of sulfonamides via michael reactions

10.1080/10426500802274625

The study presents an efficient, green, and reusable catalytic system using KF/Al2O3 for the solvent-free synthesis of N-alkyl derivatives of sulfonamides via Michael reactions. The process is conducted under microwave irradiation without the need for organic solvents, making it environmentally friendly and cost-effective. The researchers optimized the reaction conditions and found that the use of KF/Al2O3 and tetrabutylammonium bromide (TBAB) significantly improved the yield and selectivity of the desired N-alkylated sulfonamides. The method was effective with various α,β-unsaturated esters and sulfonamides, demonstrating broad applicability. The catalyst could be reused multiple times after simple washing, showing its potential for industrial applications. The study emphasizes the importance of green chemistry practices and the role of microwave irradiation in accelerating reaction rates and improving outcomes.

Glycan array on aluminum oxide-coated glass slides through phosphonate chemistry

10.1021/ja1046523

Shih-Huang Chang et al. presents a novel method for creating glycan arrays on aluminum oxide-coated glass (ACG) slides using phosphonate chemistry. Aluminum oxide (Al2O3) plays a crucial role as a functionalized surface for the development of glycan arrays. The study introduces both covalent and noncovalent glycan arrays, which are prepared by attaching glycans with polyfluorinated hydrocarbon or phosphonic acid tails to the ACG slide surface. The noncovalent array is characterized by MS-TOF without the need for a matrix, allowing for direct analysis of enzymatic reactions and protein binding. The covalent array, created by reacting glycans with phosphonic acid tails directly with the ACG surface, is used for quantitative protein binding analysis. The study demonstrates the effectiveness of these arrays in studying cellulase activities and differentiating between exo- and endoglucanase activities using cellotetraose as a substrate.