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重要文件

223794

Sigma-Aldrich

五氧化二钒

≥98%

同義詞:

Vandia, 五氧化二钒

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About This Item

線性公式:
V2O5
CAS號碼:
分子量::
181.88
EC號碼:
MDL號碼:
分類程式碼代碼:
12161600
PubChem物質ID:
NACRES:
NA.22
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品質等級

化驗

≥98%

形狀

powder

反應適用性

core: vanadium
reagent type: catalyst

mp

690 °C (lit.)

密度

3.35 g/mL at 25 °C (lit.)

SMILES 字串

O=[V](=O)O[V](=O)=O

InChI

1S/5O.2V

InChI 密鑰

GNTDGMZSJNCJKK-UHFFFAOYSA-N

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一般說明

五氧化二钒可用作氧化催化剂,将乙二醛氧化为乙醛酸。[1]

應用

以 V2O5、Sb2O3 和高纯度过氧化氢为原料,采用溶胶-凝胶法制备了甲苯转化为苯甲腈或丙烯转化为丙烯腈的选择性氨氧化催化剂。[2]已报告用微波辅助法制备新的稳定的氧化物离子导电的钒酸铋相的方法,即从 V2O5,Bi2O3 和其他固体氧化物。这些陶瓷在固体氧化物燃料电池、水蒸气电解槽和氧传感器方面显示出良好的应用前景。[3]

訊號詞

Danger

危險分類

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 2 - Carc. 1B - Lact. - Muta. 2 - Repr. 2 - STOT RE 1 Inhalation - STOT SE 3

標靶器官

Respiratory system, Respiratory Tract

儲存類別代碼

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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分析證明 (COA)

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V2O5/C catalyst for liquid phase oxidation of glyoxal to glyoxylic acid
Niu Y and Li R
Science China: Chemistry, 52, 1057-1062 (2019)
Gongming Wang et al.
ACS nano, 6(11), 10296-10302 (2012-10-12)
Here we report a new strategy to improve the electrochemical stability of vanadium oxide electrodes for pseudocapacitors. Vanadium oxides are known to suffer from severe capacitance loss during charging/discharging cycling, due to chemical dissolution and ion intercalation/deintercalation-induced material pulverization. We
Hongchang Pang et al.
Chemical communications (Cambridge, England), 49(15), 1536-1538 (2013-01-17)
A template-free strategy is exploited to bottom-up synthesize yolk-shell vanadium oxide through a two-step spontaneous assembly of hydrolytically formed subunits in a one-pot process. The unique structured vanadium pentoxide exhibits excellent cathode performance for lithium ion batteries.
Brett A Kruger et al.
Optics express, 20(21), 23598-23609 (2012-11-29)
We present two types of designs for plasmonic switches based on hybridization between single interface surface plasmon polaritons and modes of a thin film of transition metal oxide material, vanadium dioxide (VO(2)). The design includes integrated, localized heaters that activate
B Saravanakumar et al.
ACS applied materials & interfaces, 4(9), 4484-4490 (2012-08-24)
Vanadium pentoxide (V(2)O(5)) has attracted attention for supercapcitor applications because of its extensive multifunctional properties. In the present study, V(2)O(5) nanoporous network was synthesized via simple capping-agent-assisted precipitation technique and it is further annealed at different temperatures. The effect of

文章

Professor Chen (Nankai University, China) and his team explain the strategies behind their recent record-breaking organic solar cells, reaching a power conversion efficiency of 17.3%.

Questions

1–6 of 6 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    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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  3. What is the particle size of the 223794-100G Vanadium Oxide?

    1 answer
    1. This material particle size will be 850 um or less.

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  4. What is Product 223794, Vanadium(V) oxide, soluble in?

    1 answer
    1. According to the chemicals encyclopedia published by the Royal Society of Chemistry (ed. 13, 9987), one gram dissolves in approximately 125 mL of water. It is soluble in concentrated acids, forming red to yellow solutions; soluble in alkalies, forming vanadates; it is insoluble in alcohol.

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  5. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  6. What is the density of Product 223794, Vanadium(V) oxide?

    1 answer
    1. The reported density is 3.35 g/mL at 25°C(lit.)

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