Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jcat.2006.04.008
Title: Selective Meerwein-Ponndorf-Verley reduction of α, β-unsaturated aldehydes over Zr-zeolite beta
Authors: Zhu, Y.
Chuah, G.-K. 
Jaenicke, S. 
Keywords: α, β-Unsaturated aldehydes
Chemoselectivity
Cinnamaldehyde
Meerwein-Ponndorf-Verley reduction
Zr-zeolite beta
Issue Date: 1-Jul-2006
Citation: Zhu, Y., Chuah, G.-K., Jaenicke, S. (2006-07-01). Selective Meerwein-Ponndorf-Verley reduction of α, β-unsaturated aldehydes over Zr-zeolite beta. Journal of Catalysis 241 (1) : 25-33. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcat.2006.04.008
Abstract: Zr-zeolite beta with Si/Zr ratio of 75-200, as well as zeolite beta with both Zr (Si/Zr ratio of 100) and Al (Si/Al ratios of 100 and 25), were synthesized in a seeded synthesis using HF as the mineralizer. The Al-free Zr-zeolite beta was found to catalyse the MPV reduction of α, β-unsaturated aldehydes to the corresponding alcohols with high selectivity. In the reduction of cinnamaldehyde to cinnamyl alcohol, TONs of 55-77 mol mol-1 Zr h-1 were obtained with selectivity > 98 %. Zr-zeolite beta maintained good activity and selectivity in the presence of water and benzoic acid. Reuse of the catalyst by washing with 2-propanol or recalcination led to recovery of activity. For the Al-containing Zr-zeolite beta, 27Al NMR spectra showed that Al was incorporated into the zeolitic framework. This is in agreement with pyridine adsorption studies in which Brønsted acidity was detected. However, the increased acidity decreased the selectivity in the MPV reduction of cinnamaldehyde as a significant amount of 1-cinnamyl 2-propyl ether was formed as a byproduct. Hence, Al-free Zr-zeolite beta is a useful chemoselective catalyst for the MPV reduction of α, β-unsaturated aldehydes. © 2006 Elsevier Inc. All rights reserved.
Source Title: Journal of Catalysis
URI: http://scholarbank.nus.edu.sg/handle/10635/94770
ISSN: 00219517
DOI: 10.1016/j.jcat.2006.04.008
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

58
checked on Jun 17, 2018

WEB OF SCIENCETM
Citations

51
checked on May 16, 2018

Page view(s)

93
checked on Jun 8, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.