fulltext.study @t Gmail

Epoxidation with hydrotalcite-intercalated organotungstic complexes

Paper ID Volume ID Publish Year Pages File Format Full-Text
44046 46001 2006 9 PDF Available
Title
Epoxidation with hydrotalcite-intercalated organotungstic complexes
Abstract

W(VI)-based catalysts for epoxidation were incorporated into hydrotalcite either by anionic exchange or by complexation with phosphonic acids previously incorporated between the sheets. Phenyl- and dodecylphosphonic acids and peroxotungstic salts were intercalated into hydrotalcite as attested by the expansion of the lamellar lattice and the complexation of phosphonic acids with W-peroxo species was made possible when using a lipophilic quaternary ammonium peroxotungstic salt [W(VI)-Aliquat] which maintains the layered structure. These catalysts were checked in the epoxidation of cyclohexene with hydrogen peroxide or terbutylhydroperoxide as external oxidants. The materials prepared by anionic exchange gave only epoxycyclohexane but with moderate yields, whereas those prepared from previously incorporated phosphonic acids gave rather high selectivity (50–72%) in allylic oxidation products.

Keywords
Peroxotungstate; Olefin epoxidation; Hydrotalcite; Hydrogen peroxide; Dodecylphosphonic acid; Epoxidation; Peroxotungstic acid; Phenylphosphonic acid
First Page Preview
Epoxidation with hydrotalcite-intercalated organotungstic complexes
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 300, Issue 2, 26 January 2006, Pages 100–108
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