199974

Aluminum oxide

activated, neutral, Brockmann I

• Synonym(s): Alumina
• Linear Formula: Al₂O₃
• CAS Number: 1344-28-1
• Molecular Weight: 101.96
• EC Number: 215-691-6
• MDL number: MFCD00003424
• UNSPSC Code: 12352311
• eCl@ss: 38120402
• PubChem Substance ID: 329751966
• NACRES: SB.52

Properties

• grade: Brockmann I; activated; standard grade
• form: powder
• manufacturer/tradename: CAMAG 507-C-I
• technique(s): ion chromatography: suitable
• impurities: <0.03% Fe₂O₃; <0.03% SiO₂; <0.4% Na₂O
• particle size: 40-160 μm
• pore size: 58 Å pore size
• pH: 7.0±0.5 ( in H₂O)
• mp: 2040 °C (lit.)
• SMILES string: O=[Al]O[Al]=O
• InChI: 1S/2Al.3O
• InChI key: TWNQGVIAIRXVLR-UHFFFAOYSA-N

Description

General description

The mechanism of formation of protective scales of α-Al₂O₃ on surfaces of binary M-Al (M = Fe, Ni or Co) alloys at high temperatures has been studied. Activated aluminum oxides having different acidities and water concentrations (having Brockmann activity I-V) can easily detect various types of water (namely free water, pore water, and bound water) on the aluminum oxide present in soils.

Application

Aluminum oxide (Alumina, Al₂O₃) has been used in the preparation of one-step self-assembled double-helices of multiwalled carbon nanotubes (MWCNT) arrays (composed of Fe nanoparticles bound to SiO_x micro-particles).

Aluminum oxide (neutral) has been used in the preparation of alumina supported silver (Ag/Al₂O₃) catalyst suitable for selective catalytic reduction of nitrogen oxides (NOx) by hydrocarbons (HC-SCR).

Packaging

Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable