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199974

Sigma-Aldrich

氧化铝

activated, Brockmann I, standard grade, neutral

别名:

氧化铝

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About This Item

线性分子式:
Al2O3
CAS号:
1344-28-1
分子量:
101.96
EC 号:
215-691-6
MDL编号:
MFCD00003424
UNSPSC代码:
12352311
eCl@ss:
38120402
PubChem化学物质编号:
329751966
NACRES:
SB.52
价格与库存信息目前不能提供

表单

powder

制造商/商品名称

CAMAG 507-C-I

技术

ion chromatography: suitable

杂质

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

粒径

40-160 μm

孔径

58 Å pore size

pH值（酸碱度）

7.0±0.5 ( in H2O)

mp

2040 °C (lit.)

SMILES字符串

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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相关类别

一般描述

在高温下二元M-Al（M = Fe、Ni或Co）合金表面形成α-Al2O3 保护膜的机理已有研究。[1]具有不同酸度和水浓度（具有Brockmann活性I-V）的活化氧化铝可以很容易地对土壤中存在的氧化铝上的各种类型的水（即游离水、孔隙水和结合水）进行检测。[2]

应用

氧化铝（中性）已用于制备氧化铝负载的银（Ag/Al2O3）催化剂，其适用于通过烃（HC-SCR）选择性催化，对氮氧化物（NOx）进行还原。[3]
氧化铝（氧化铝，Al2O3）已被用于制备多壁碳纳米管（MWCNT）阵列（由与纳米SiOx微粒结合的Fe纳米粒子组成）的一步自组装双螺旋。[4]

包装

Brockmann氧化铝适用于柱色谱和吸附过滤。

储存分类代码

13 - Non Combustible Solids

WGK

nwg

闪点(°F)

Not applicable

闪点(°C)

Not applicable

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCM3009
BCCM1346
BCCM1048
BCCJ8839
BCCH2409

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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)
Prescott R and Graham MJ.
Oxidation of Metals, 38(3-4), 233-254 (1992)
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)
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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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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/449/386/product-dating-information-mk.pdf

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