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 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 Research on Chemical Intermediates Springer Journals

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

Loading next page...
Springer Netherlands
Copyright © 2016 by Springer Science+Business Media Dordrecht
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial