scholarly journals Supported ionic liquid silica nanoparticles (SILnPs) as an efficient and recyclable heterogeneous catalyst for the dehydration of fructose to 5-hydroxymethylfurfural

2011 ◽  
Vol 13 (2) ◽  
pp. 340 ◽  
Author(s):  
Kalpesh B. Sidhpuria ◽  
Ana L. Daniel-da-Silva ◽  
Tito Trindade ◽  
João A. P. Coutinho
Keyword(s):  
Ionic Liquid ◽  
Silica Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Supported Ionic Liquid ◽  
Recyclable Heterogeneous Catalyst

Supported Ionic-Liquid “Semi-Heterogeneous Catalyst”: An Interfacial Chemical Study

2013 ◽  
Vol 117 (14) ◽  
pp. 7026-7038 ◽  
Author(s):  
Wei Ye ◽  
Shulian He ◽  
Liping Ding ◽  
Yunjin Yao ◽  
Lei Wan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Heterogeneous Catalyst ◽  
Chemical Study ◽  
Supported Ionic Liquid

MOR zeolite supported Brønsted acidic ionic liquid: an efficient and recyclable heterogeneous catalyst for ketalization

RSC Advances ◽  
2014 ◽  
Vol 4 (24) ◽  
pp. 12160-12167 ◽  
Author(s):  
Zhang-Min Li ◽  
Yan Zhou ◽  
Duan-Jian Tao ◽  
Wei Huang ◽  
Xiang-Shu Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Heterogeneous Catalyst ◽  
Heterogeneous Catalysts ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Recyclable Heterogeneous Catalyst ◽  
Supported Ionic Liquids

In order to widen the application of ionic liquids as efficient and renewable heterogeneous catalysts, supported ionic liquids (SILs) have received considerable attention.

Molecular Ionic Liquid Supported on Mesoporous Silica Nanoparticles-Imprinted Iron Metal: A Recyclable Heterogeneous Catalyst for One-Pot, Three-Component Synthesis of a Library of Benzodiazepines

2019 ◽  
Vol 16 (1) ◽  
pp. 136-144 ◽  
Author(s):  
Vajihe Nejadshafiee ◽  
Hossein Naeimi
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
One Pot ◽  
Environmental Friendliness ◽  
Iron Metal ◽  
Catalytic Cyclization ◽  
Recyclable Heterogeneous Catalyst ◽  
Mcm 41

Aim and Objective: A novel and convenient transformation for the synthesis of benzodiazepines has been developed via catalytic cyclization reaction using ionic liquid supported on mesoporous silica nanoparticles- imprinted iron metal (Fe-MCM-41-IL) as a recyclable catalyst under mild conditions. Materials and Methods: For preparation of Fe-MCM-41-IL, FeCl3·6H2O was added to a mixture of distilled water, CTAB and NaOH aqueous solution. The tetraethyl orthosilicate was dropped into the solution under stirring. The product was separated, washed, and dried. The solid product was collected and calcined. Then, to a solution of β-hydroxy-1,2,3-triazole in toluene, 3-chloropropyltrimethoxysilane was added and the mixture was refluxed. The Conc. H2SO4 was added dropwise into the above solution and stirred. For immobilization of IL onto Fe-MCM-41, the solution IL was added to Fe-MCM-41 and was refluxed for the production of the Fe- MCM-41. Following this, benzodiazepines were synthesized using Fe-MCM-41-IL as a catalyst. </P><P> Results: The Fe-MCM-41-IL was prepared and characterized by a different analysis. The activity of the prepared catalyst as the above described was tested in the model reaction of o-phenyldiamine, tetronic acid, and different aldehydes under room temperature in ethanol solvent. Also, the catalyst could be recovered for five cycles. Conclusion: We developed a novel nanocatalyst for the synthesis of benzodiazepines in excellent yields. Fe- MCM-41-IL as a catalyst has advantages such as: environmental friendliness, reusability and easy recovery of the catalyst using an external magnet.

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