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Title
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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
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Type
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JournalPaper
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Keywords
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Silica coated magnetic NiFe2O4 nanoparticle, phosphomolybdic acid; recyclable catalyst, one-pot synthesis, tri- and tetra-substituted imidazoles,
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Abstract
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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.
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Researchers
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Farid Moeinpour (Not In First Six Researchers), Golnoosh Esmailian Kahoo (Not In First Six Researchers), Samaneh Sedigh Ashrafi (Fifth Researcher), Reza Tayebee (Fourth Researcher), Amir Khojastehnezhad (Third Researcher), Hossein Eshghi (Second Researcher), Behrooz Maleki (First Researcher)
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