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199974 Sigma-Aldrich

Aluminum oxide

activated, neutral, Brockmann I

Synonym: Alumina

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Properties

Related Categories Adsorbent Media (Inorganic), Adsorbents, Filter Aids and Drying Agents, Aluminum, Aluminum Oxide, Analytical/Chromatography,
grade   Brockmann I
  activated
  standard grade
InChI Key   TWNQGVIAIRXVLR-UHFFFAOYSA-N
form   powder
mfr. no.   CAMAG 507-C-I
impurities   <0.03% Fe2O3
  <0.03% SiO2
  <0.4% Na2O
particle size   50-300 mesh
pore size   58 Å pore size
surface area   155 m2/g
pH   7.0±0.5 ( in H2O)
mp   2040 °C (lit.)
anion traces   chloride (Cl-): ≤0.03 (mval/g)

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 SiOx 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

1 kg in poly bottle

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

100 g in poly bottle

5 kg in poly drum

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
RTECS 
BD1200000

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles

Articles

Selection Guide for Polymeric Resins in Chromatography & Purification

Sigma-Aldrich carries a vast array of resins, from leading manufacturers; such as, Dow Chemical, Rohm & Haas, Mitsubishi, and Lanxess. Our product line includes adsorbent, ion-exchange (anion / catio...
Keywords: Adsorption, Antibiotics, Combinatorial synthesis, Detergents, Fermentation, Filtration, Hormones, Ion Exchange, Ion exchange resins, Pharmaceutical, Purification, Separation

Peer-Reviewed Papers
15

References

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