The catalytic effect of anion-exchanged supported ionic liquid on aza-Michael-type addition

The catalytic effect of anion-exchanged supported ionic liquid on aza-Michael-type addition Keywords Anion-exchanged supported ionic liquid · Diatomaceous earth · Anionic polytungstophosphate · Aza-Michael-type addition · Catalysis & Elaheh Kowsari kowsarie@aut.ac.ir Department of Chemistry, Amirkabir University of Technology, Hafez Avenue, No. 424, Tehran, Islamic Republic of Iran 123 3692 M. H. Ghasemi, E. Kowsari Introduction Diatomaceous earth (DE), known as diatomite or diatoms, is the most abundant form of silica on earth naturally composed of amorphous hydrated silica (SiO – nH O) [1]. Hydrophilic properties, high porosity, strong acid resistance, low thermal conductivity, low density and excellent thermal resistance are among DE unique physical and chemical characteristics [2–5] which make it ideal for a variety of applications such as supports, porous catalysts, and adsorbents [6, 7]. Due to these special characteristics, DE was applied as a porous support in this research. Surface functionalization of DE by the introduction of covalently bonded functional groups to the outer DE surfaces is a helpful approach to increase selectivity and loading capacity of a catalytically active species [8–10]. The polyoxometalate compounds have been used as efficient catalysts in various chemical transformations due to their strong Brønsted acidity, thermal stabilities, lower corrosivity and higher catalytic activity [11–16]. However, the problems in recovery at the end http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

The catalytic effect of anion-exchanged supported ionic liquid on aza-Michael-type addition

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Publisher
Springer Netherlands
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2840-0
Publisher site
See Article on Publisher Site

Abstract

Keywords Anion-exchanged supported ionic liquid · Diatomaceous earth · Anionic polytungstophosphate · Aza-Michael-type addition · Catalysis & Elaheh Kowsari kowsarie@aut.ac.ir Department of Chemistry, Amirkabir University of Technology, Hafez Avenue, No. 424, Tehran, Islamic Republic of Iran 123 3692 M. H. Ghasemi, E. Kowsari Introduction Diatomaceous earth (DE), known as diatomite or diatoms, is the most abundant form of silica on earth naturally composed of amorphous hydrated silica (SiO – nH O) [1]. Hydrophilic properties, high porosity, strong acid resistance, low thermal conductivity, low density and excellent thermal resistance are among DE unique physical and chemical characteristics [2–5] which make it ideal for a variety of applications such as supports, porous catalysts, and adsorbents [6, 7]. Due to these special characteristics, DE was applied as a porous support in this research. Surface functionalization of DE by the introduction of covalently bonded functional groups to the outer DE surfaces is a helpful approach to increase selectivity and loading capacity of a catalytically active species [8–10]. The polyoxometalate compounds have been used as efficient catalysts in various chemical transformations due to their strong Brønsted acidity, thermal stabilities, lower corrosivity and higher catalytic activity [11–16]. However, the problems in recovery at the end

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Dec 29, 2016

References

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