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199974

Sigma-Aldrich

Aluminum oxide

activated, neutral, Brockmann I

Sinônimo(s):
Alumina
Fórmula linear:
Al2O3
Número CAS:
Peso molecular:
101.96
Número EC:
Número MDL:
eCl@ss:
38120402
ID de substância PubChem:
NACRES:
SB.52

Nível de qualidade

100

grau

Brockmann I
activated
standard grade

forma

powder

manufacturer/tradename

CAMAG 507-C-I

aplicação(ões)

ion chromatography: suitable

Impurezas

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

tamanho de partícula

40-160 μm

tamanho de poro

58 Å pore size

área da superfície

205 m2/g

pH

7.0±0.5 ( in H2O)

pf

2040 °C (lit.)

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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Descrição geral

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.

Aplicação

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).

Embalagem

100 g in poly bottle
1 kg in poly bottle
5 kg in poly drum
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.

Storage Class Code

11 - Combustible Solids

WGK Alemanha

nwg

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Certificado de análise

Certificado de origem

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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