Title : ( Silica coated magnetic NiFe2O4 nanoparticle supported phosphomolybdic acid; synthesis, preparation and its application as a heterogeneous and recyclable catalyst for the one-pot synthesis of tri- and tetra-substituted imidazoles under solvent free conditions )
Authors: Behrooz Maleki , Hossein Eshghi , Amir khojastehnezhad golmakani , Reza Tayebee , Samaneh Sedigh Ashraf , Golnoosh Esmailian Kahooa , Farid Moeinpour ,
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Abstract
In this research, a magnetically-recoverable catalyst (NiFe2O4@SiO2–H3PMo12O40) was prepared by supporting phosphomolybdic acid (H3PMo12O40) onto silica-coated NiFe2O4 nanoparticles. The prepared sample was characterized by FT-IR, TEM, SEM and VSM techniques and then the catalytic activity of this catalyst was investigated in the synthesis of tri- and tetra-substituted imidazole derivatives. More importantly, the catalyst was easily isolated from the reaction mixture by a magnetic bar and reused at least ten times without significant degradation in its activity.
Keywords
, NiFe2O4@SiO2–H3PMo12O40, H3PMo12O40, silica-coated NiFe2O4, nanoparticles.
@article{paperid:1048929,
author = {Behrooz Maleki and Eshghi, Hossein and Khojastehnezhad Golmakani, Amir and Reza Tayebee and Samaneh Sedigh Ashraf and Golnoosh Esmailian Kahooa and Farid Moeinpour},
title = {Silica coated magnetic NiFe2O4 nanoparticle supported phosphomolybdic acid; synthesis, preparation and its application as a heterogeneous and recyclable catalyst for the one-pot synthesis of tri- and tetra-substituted imidazoles under solvent free conditions},
journal = {RSC Advances},
year = {2015},
volume = {5},
number = {7},
month = {July},
issn = {2046-2069},
pages = {64850--64857},
numpages = {7},
keywords = {NiFe2O4@SiO2–H3PMo12O40;H3PMo12O40; silica-coated NiFe2O4; nanoparticles.},
}
%0 Journal Article
%T Silica coated magnetic NiFe2O4 nanoparticle supported phosphomolybdic acid; synthesis, preparation and its application as a heterogeneous and recyclable catalyst for the one-pot synthesis of tri- and tetra-substituted imidazoles under solvent free conditions
%A Behrooz Maleki
%A Eshghi, Hossein
%A Khojastehnezhad Golmakani, Amir
%A Reza Tayebee
%A Samaneh Sedigh Ashraf
%A Golnoosh Esmailian Kahooa
%A Farid Moeinpour
%J RSC Advances
%@ 2046-2069
%D 2015
