fulltext.study @t Gmail

Mechanistic study of propylene oxidation over a Bi–molybdate catalyst by in situ DRIFTS and probe molecules

Paper ID Volume ID Publish Year Pages File Format Full-Text
42631 45934 2008 7 PDF Available
Title
Mechanistic study of propylene oxidation over a Bi–molybdate catalyst by in situ DRIFTS and probe molecules
Abstract

Mechanisms of propylene oxidation and spectral identification of active intermediates over the Bi–molybdate catalyst have been investigated using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) in combination with probe molecules. The results show that the exact IR position of allyl species is at the wavenumber of 1454 cm−1, which resolves the long-term disagreement about assignment of allyl species. Mechanisms of propylene oxidation are perfected by proposing the mechanisms of side reactions: firstly, acetone precursor is formed via enolic species by oxidation and desorbed as acetone; carbon dioxide is then transformed via such species as formate, carboxylate, and carbonate on the catalyst surface except for the gas-phase reaction. Additionally, the mechanism of the main reaction was also verified.

Graphical abstractAttention is focused on spectral identification of active intermediates and the mechanisms of side reactions of propylene oxidation over the Bi–molybdate catalyst using in situ diffuse reflectance infrared Fourier transform spectroscopy in combination with probe molecules. On the basis of in situ identification of intermediates, the above complete reaction routes of propylene oxidation are proposed.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Propylene oxidation; Bismuth molybdate; Allyl species; In situ DRIFTS; Probe molecule
First Page Preview
Mechanistic study of propylene oxidation over a Bi–molybdate catalyst by in situ DRIFTS and probe molecules
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 351, Issue 1, 15 December 2008, Pages 75–81
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