Catalytic behavior of copper–amine complex supported on mesoporous silica SBA-15 toward mono-Aza-Michael addition: role of amine groups

This work concerns the preparation and modification of mesoporous silica SBA-15 with different amine-copper complexes in order to study their impact on the catalytic behavior via Aza Michael addition. Firstly, SBA-15 was prepared hydrothermally, then functionalized by mono-, di- and tri-amine, and i...

Full description

Saved in:
Bibliographic Details
Published in:Journal of inorganic and organometallic polymers and materials 2019-09, Vol.29 (5), p.1773-1784
Main Authors: Hakiki, Aboubakr, Kerbadou, Riad Mustpha, Boukoussa, Bouhadjar, Zahmani, Hadjira Habib, Launay, Franck, Pailleret, Alain, Pillier, Françoise, Hacini, Salih, Bengueddach, Abdelkader, Hamacha, Rachida
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Catalytic activity
Chemical Sciences
Chemistry
Chemistry and Materials Science
Coordination compounds
Copper
Copper compounds
Inorganic Chemistry
Leaching
Liquid phases
Material chemistry
Organic Chemistry
Polymer Sciences
Reaction time
Reagents
Silicon dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work concerns the preparation and modification of mesoporous silica SBA-15 with different amine-copper complexes in order to study their impact on the catalytic behavior via Aza Michael addition. Firstly, SBA-15 was prepared hydrothermally, then functionalized by mono-, di- and tri-amine, and in the second step, copper (II) was anchored. The catalytic activity of these solids was evaluated at room temperature under liquid-phase conditions. Effects of catalyst nature, catalyst mass, reaction time and the starting reagents nature were investigated. Cu@SBA-15 (non-aminated) was shown to be efficient in the Aza Michael addition, but after its second re-use, a progressive decrease in the product yield was obtained due to copper leaching. The catalytic behavior of all prepared catalysts showed a selective reaction via the mono-Aza-Michael addition. Amongst all the catalysts, the one containing the monoamine-copper complex led to the highest yield. This catalyst was used in four consecutive cycles without significant loss of activity, which confirms its stability.
ISSN:1574-1443
1574-1451
DOI:10.1007/s10904-019-01139-7