As noted in the 'Application' section above, this material 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). This product has pore diameter of approximately 6 nm and a surface area of approximately 205 m2/g. Suitability depends on the specific catalyst system and process requirements.
199974
Aluminum oxide
activated, Brockmann I, standard grade, neutral
Synonym(s):
Alumina
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About This Item
Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
PubChem Substance ID:
eCl@ss:
38120402
UNSPSC Code:
12352311
NACRES:
SB.52
EC Number:
215-691-6
MDL number:
Pricing and availability is not currently available.
Quality Segment
form
powder
manufacturer/tradename
CAMAG 507-C-I
greener alternative product characteristics
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
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.)
greener alternative category
SMILES string
O=[Al]O[Al]=O
InChI
1S/2Al.3O
InChI key
TWNQGVIAIRXVLR-UHFFFAOYSA-N
General description
We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. Aluminum oxide serves as a multifunctional additive or coating in lithium-ion batteries, helping stabilize electrode–electrolyte interfaces, suppress side reactions, improve thermal stability, and extend cycle life. By enabling safer, longer-lasting cells, it reduces material waste and energy use across the battery lifecycle. Click here for more information.
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.
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This Item | |||
|---|---|---|---|
| form powder | form powder | form powder | form powder |
| particle size 40-160 μm | particle size ~150 mesh | particle size 50-300 mesh | particle size 0.05-0.15 mm |
| pore size 58 Å pore size | pore size 58 Å pore size | pore size 58 Å pore size | pore size 60 Å mean pore size |
| pH 7.0±0.5 ( in H2O) | pH 9.5±0.5 ( in H2O) | pH 4.5±0.5 ( in H2O) | pH 7.0±0.5 |
| technique(s) ion chromatography: suitable | technique(s) solid phase extraction (SPE): suitable | technique(s) ion chromatography: suitable | technique(s) LPLC: suitable |
| manufacturer/tradename CAMAG 507-C-I | manufacturer/tradename CAMAG 5016-A-I | manufacturer/tradename CAMAG 504-C-I | manufacturer/tradename - |
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Storage Class
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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Is this type of alumina suitable for use as a support for heterogeneous catalysts?
1 answer-
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Can I know the pore volume of aluminum oxide (prod. 199974)?
1 answer-
The pore volume is approximately 25 mL/g.
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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Hi, could you please tell me the particle size of this products? We bought it before, the important information of the product we bought listed as below: 199974-1kg, Lot#BCBN5599V, Aluminum oxide (CAS: 1344-28-1), activated, neutral, Brockmann I
1 answer-
The particle size of this material is not tested on a lot to lot basis. However, historical data indicates that the bulk of this material will have a particle size range of 40 - 300 um with 95% ranging from 40 - 160 um.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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