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199974

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Aluminum oxide

activated, neutral, Brockmann I

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Synonym(s):
Alumina
Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
EC Number:
MDL number:
eCl@ss:
38120402
PubChem Substance ID:
NACRES:
SB.52

grade

Brockmann I
activated
standard grade

Quality Level

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

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1 of 4

This Item
199966199443799319
vibrant-m

199974

Aluminum oxide

vibrant-m

199966

Aluminum oxide

vibrant-m

199443

Aluminum oxide

vibrant-m

799319

Aluminum oxide

pore size

58 Å pore size

pore size

58 Å pore size

pore size

58 Å pore size

pore size

58 Å pore size

particle size

40-160 μm

particle size

50-300 mesh

particle size

~150 mesh

particle size

50-300 mesh

manufacturer/tradename

CAMAG 507-C-I

manufacturer/tradename

CAMAG 504-C-I

manufacturer/tradename

CAMAG 5016-A-I

manufacturer/tradename

CAMAG 507-C-I

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

impurities

<0.03% Fe2O3, <0.4% Na2O, <0.03% SiO2

impurities

<0.03% Fe2O3, <0.03% SiO2, <0.4% Na2O

impurities

<0.03% Fe2O3, <0.4% Na2O

impurities

<0.03% Fe2O3, <0.03% SiO2, <0.4% Na2O

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

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

Storage Class

13 - Non Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable


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The role of Ag O Al entities in adsorption of NCO species and reduction of NO x.
Deng H, et al.
Catalysis Today, 258, 35-40 (2015)
Carbon nanotube bundles self-assembled in double helix microstructures.
Cervantes-Sodi F, et al.
Carbon, 50(10), 3688-3693 (2012)
Thermoanalytical studies of water on activated alumina, Brockmann I-V,(acid, neutral, basic) from- 60? to+ 700? C.
Hampson JW and Bleam WF.
Thermochimica Acta, 288(1), 179-189 (1996)
Prescott R and Graham MJ.
Oxidation of Metals, 38(3-4), 233-254 (1992)
Chien-Chih Lin et al.
Nanoscale, 5(17), 8090-8097 (2013-07-25)
We demonstrated a promising route for enhancing temperature sensitivity, improving saturation voltage, and reducing power consumption of the MOS(p) tunneling temperature sensors by introducing ultrathin Al2O3 into the dielectric stacks. Detailed illustrations of the working mechanism and device concept are

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