fulltext.study @t Gmail

The ability of Nb2O5 and Ta2O5 to generate active oxygen in contact with hydrogen peroxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
50916 46821 2013 7 PDF Available
Title
The ability of Nb2O5 and Ta2O5 to generate active oxygen in contact with hydrogen peroxide
Abstract

•Ability of amorphous Nb2O5 and Ta2O5 in radical generation after H2O2 treatment•Dependence of the radical types on the nature of metal oxide•Peroxo radicals formed on amorphous Nb2O5 active in the oxidation of glycerol•Differences between crystalline and amorphous oxides in the interaction with H2O2

Amorphous and crystalline niobium(V) and tantalum(V) oxides were treated with hydrogen peroxide and studied by XRD, UV–vis, FTIR and ESR techniques to identify changes on their surface upon interaction with hydrogen peroxide. Differences between amorphous and crystalline materials in the interaction with H2O2 depending on the hydroxylation of the surface and the nature of OH groups were evident. The type of radical species formed on hydroxylated amorphous materials treated with H2O2 depended on the nature of metal oxide. It was proved that peroxo radical species formed in the interaction of H2O2 with amorphous Nb2O5 were the active intermediates in the oxidation of glycerol to glycolic acid with hydrogen peroxide. The radicals formed on amorphous Ta2O5 surface treated with hydrogen peroxide were poorly active in the oxidation of glycerol. Detailed study of the above mentioned radicals is in progress and will be a subject of a separate paper.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Amorphous and crystalline Nb2O5, Ta2O5; Radical formation; Oxidation of glycerol
First Page Preview
The ability of Nb2O5 and Ta2O5 to generate active oxygen in contact with hydrogen peroxide
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 37, 5 July 2013, Pages 85–91
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us