fulltext.study @t Gmail

NiO-doped Au/Ti-powder: A catalyst with dramatic improvement in activity for gas-phase oxidation of alcohols

Paper ID Volume ID Publish Year Pages File Format Full-Text
40048 45843 2013 7 PDF Available
Title
NiO-doped Au/Ti-powder: A catalyst with dramatic improvement in activity for gas-phase oxidation of alcohols
Abstract

•NiO-doped Au/Ti-powder catalyst is highly active for gas-phase oxidation of alcohols.•The catalyst shows good stability in longer-term test of alcohol oxidation.•Formation of the NiO@Au ensembles is essential to the high activity.•Ni2O3-Au+ was defined as active-site for the selective oxidation of alcohol.

An active and stable NiO@Au/Ti-powder catalyst, which can be obtained by doping Au/Ti-powder (Au: 35–40 nm) with NiO, has been developed for the gas-phase oxidation of alcohols. Gold particles are found to be partially covered with tiny NiO segments to form specific NiO@Au ensembles thereby leading to a dramatic conversion improvement from only ∼5% (without NiO doping) to ∼94% for the benzyl alcohol oxidation at 280 °C. Additionally, the selective oxidation of cyclopropyl carbinol can proceed over this catalyst at 280 °C with a selectivity of 94% and a conversion of 72–80% throughout the entire 300 h test. The hybrid active-sites, Ni2O3-Au+, on the NiO@Au ensemble are identified using X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS).

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (172 K)Download as PowerPoint slide

Keywords
Gold catalyst; NiO; Interface; Active site; Alcohol oxidation; Aldehyde
First Page Preview
NiO-doped Au/Ti-powder: A catalyst with dramatic improvement in activity for gas-phase oxidation of alcohols
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 467, 2 October 2013, Pages 171–177
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