Penicillium expansum lipase-coated magnetic Fe3O4–polymer hybrid hollow nanoparticles: a highly recoverable and magnetically separable catalyst for the synthesis of 1,3-dibutylurea

RSC Advances ◽  
2014 ◽  
Vol 4 (49) ◽  
pp. 25983-25992 ◽  
Author(s):  
Jun Liu ◽  
Wenjing Wang ◽  
Huiwen Liu ◽  
Yaoliang Zhou ◽  
Haibo Zhang ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Ethylene Carbonate ◽  
Penicillium Expansum ◽  
Hollow Nanoparticles ◽  
Polymer Hybrid ◽  
Magnetically Separable Catalyst ◽  
Magnetically Separable ◽  
Magnetic Fe3o4

Amino-epoxy supports were innovatively imported onto magnetic nanoparticles for immobilizing enzyme which represents a novel class of heterogeneous catalyst for the synthesis of 1,3-dibutylurea from ethylene carbonate and butylamine.

scholarly journals Supported l-tryptophan on Fe3O4@SiO2 as an efficient and magnetically separable catalyst for one-pot construction of spiro[indene-2,2′-naphthalene]-4′-carbonitrile derivatives

RSC Advances ◽  
2022 ◽  
Vol 12 (3) ◽  
pp. 1319-1330
Author(s):  
Aref Ghasemi-Ghahsareh ◽  
Javad Safaei-Ghomi ◽  
Hourieh Sadat Oboudatian
Keyword(s):  
Magnetic Nanoparticles ◽  
Functionalized Silica ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Magnetically Separable Catalyst ◽  
Magnetically Separable ◽  
The One

l-Tryptophan functionalized silica-coated magnetic nanoparticles were prepared and evaluated as a magnetic nanocatalyst for the synthesis of spiro[indene-2,2′-naphthalene]-4′-carbonitrile derivatives through the one-pot four-component reaction.

Magnetic nanoparticles-supported tungstic acid (MNP-TA): an efficient magnetic recyclable catalyst for the one-pot synthesis of spirooxindoles in water

RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 2223-2230 ◽  
Author(s):  
Ali Khalafi-Nezhad ◽  
Masoumeh Divar ◽  
Farhad Panahi
Keyword(s):  
Magnetic Nanoparticles ◽  
Tungstic Acid ◽  
Recyclable Catalyst ◽  
One Pot ◽  
One Pot Synthesis ◽  
Catalytic Application ◽  
Magnetically Separable Catalyst ◽  
Magnetically Separable ◽  
The One ◽  
Magnetic Recyclable

This paper reports the preparation, characterization and catalytic application of a novel, magnetically separable catalyst consisting of tungstic acid supported on silica coated magnetic nanoparticles.

Application of highly efficient and reusable H3PW12O40/Fe3O4@SiO2-Pr-Pi nanocatalyst for preparation of dihydro-2-oxypyrrole derivatives

2021 ◽  
Vol 99 (1) ◽  
pp. 72-78
Author(s):  
Shiva Zafari ◽  
Ramin Ghorbani-Vaghei ◽  
Sedigheh Alavinia
Keyword(s):  
Magnetic Nanoparticles ◽  
Ftir Spectroscopy ◽  
Heterogeneous Catalyst ◽  
Environmentally Friendly ◽  
Dimethyl Acetylenedicarboxylate ◽  
Nanostructured Catalyst ◽  
Reaction Conditions ◽  
Highly Efficient ◽  
Magnetically Separable ◽  
Modified Magnetic Nanoparticles

In this study, a novel heterogeneous catalyst (H3PW12O40/Fe3O4@SiO2-Pr-Pi) was prepared via immobilization of H3PW12O40 on the surface of piperidine modified magnetic nanoparticles (Fe3O4@SiO2-Pr-Pi). The synthesis of dihydro-2-oxypyrrole derivatives was carried out by the reaction of substituted aniline, formaldehyde, and dimethyl acetylenedicarboxylate, promoted by H3PW12O40/Fe3O4@SiO2-Pr-Pi in EtOH. The formation of resultant catalyst was confirmed by FTIR spectroscopy, FE-SEM, EDX, VSM, and TGA techniques. The magnetically separable and environmentally friendly nanostructured catalyst remained quite stable during reaction conditions and was reused for at least five recycle runs.

Nanoparticle supported, magnetically separable manganese porphyrin as an efficient retrievable nanocatalyst in hydrocarbon oxidation reactions

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41551-41560 ◽  
Author(s):  
Mojtaba Bagherzadeh ◽  
Anahita Mortazavi-Manesh
Keyword(s):  
Magnetic Nanoparticles ◽  
Hydrocarbon Oxidation ◽  
Oxidation Reactions ◽  
Manganese Porphyrin ◽  
Functionalized Magnetic Nanoparticles ◽  
Magnetically Separable

Magnetically separable manganese porphyrin was prepared by immobilizing on functionalized magnetic nanoparticles via the amino propyl linkage and used as an efficient retrievable nanocatalyst in hydrocarbon oxidation reactions.

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