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Sigma-Aldrich

Ammonium niobate(V) oxalate hydrate

99.99% trace metals basis

Synonym(s):

Niobium ammonium oxalate

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About This Item

Empirical Formula (Hill Notation):
C4H4NNbO9 · xH2O
Molecular Weight:
302.98 (anhydrous basis)
MDL number:
UNSPSC Code:
12352302
NACRES:
NA.23

Quality Level

Assay

99.99% trace metals basis

form

powder

impurities

≤150.0 ppm Trace Metal Analysis

mp

122 °C (dec.) (lit.)

General description

Ammonium niobate(V) oxalate hydrate is a bifunctional reactant that can play the role of niobium precursor and porogenic agent. It is widely used as a starting material to synthesize niobium oxide-based porous nanocomposites, which finds application in the field of photocatalysis, and ceramics .

Application

  • Nanostructured Niobium and Titanium Carbonitrides as Electrocatalyst Supports.: This study investigates the synthesis and application of nanostructured niobium and titanium carbonitrides for use as electrocatalyst supports in various electrochemical reactions. The research highlights the potential of these materials to improve the performance and durability of electrocatalysts, making them suitable for applications in fuel cells and other energy conversion devices (McLeod et al., 2024).
  • Nb(2)O(5) Coating to Improve the Cyclic Stability and Voltage Decay of Li-Rich Cathode Material for Lithium-Ion Battery.: This paper explores the use of Nb(2)O(5) coatings to enhance the cyclic stability and reduce the voltage decay of lithium-rich cathode materials in lithium-ion batteries. The findings demonstrate that the niobium-based coatings significantly improve the performance and longevity of these battery materials, indicating their utility in advanced battery technologies (Liu et al., 2023).

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Phase transition behaviour and physicochemical properties of KNbO3 ceramics
P. Vlazan, et al.
Ceramics International, 43, 5963-5967 (2017)
Anchoring dye onto 1D Nb2O5 in cooperation with TEMPO for the selective photocatalytic aerobic oxidation of amines
Xiaoming Ma, et al.
Chemical Engineering Journal, 426, 131418-131418 (2021)
Nb2O5/SiO2 mesoporous monoliths synthetized by sol-gel process using ammonium niobate oxalate hydrate as porogenic agent
Luiz Fernando de Sousa Lima, et al.
Journal of Sol-Gel Science and Technology, 93, 168-174 (2020)

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