fulltext.study @t Gmail

A novel hydrofobic niobium oxyhydroxide as catalyst: Selective cyclohexene oxidation to epoxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
40472 45855 2013 5 PDF Available
Title
A novel hydrofobic niobium oxyhydroxide as catalyst: Selective cyclohexene oxidation to epoxide
Abstract

A surface modified niobium oxyhydroxide catalyst was utilized for the selective liquid-phase oxidation of cyclohexene to epoxide in the presence of hydrogen peroxide. After surface modification with a surfactant (cetiltrimetilamonium bromide -CTAB), the very active niobium oxyhydroxide (NbO2OH), presented hydrophobic characteristics and good activity for the oxidation of cyclohexene over the heterogeneous catalyst. Furthermore, the hydrophobic material presented a high selectivity toward the formation of the epoxide species. The mass spectrometry analysis of the reaction showed that epoxide species was produced with a selectivity of 60% using 0.2 mL of hydrogen peroxide, with 65% of conversion. The results strongly suggest that the reaction involves oxidizing species generated after the reaction with H2O2. The surfactant anchored over the niobium catalyst promotes a better interaction with the nonpolar substrate.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (99 K)Download as PowerPoint slideHighlights► It was produced a modified niobia with high catalytic capacity for cyclohexene oxidation using hydrogen peroxide. ► Niobium oxyhydroxide has been modified and studied as a heterogeneous catalyst for cyclohexene epoxidation. ► The material was treated with hydrogen peroxide to generate oxidizing groups (peroxo species) on the surface.

Keywords
Niobium oxyhydroxide; Hydrogen peroxide; Cyclohexene; Epoxide
First Page Preview
A novel hydrofobic niobium oxyhydroxide as catalyst: Selective cyclohexene oxidation to epoxide
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: Applied Catalysis A: General - Volume 454, 15 March 2013, Pages 88–92
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