Research Info

Title	Silica-coated magnetic NiFe2O4 nanoparticles-supported H3PW12O40; synthesis, preparation, and application as an efficient, magnetic, green catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3-c]pyrazole derivatives
Type	JournalPaper
Keywords	Nanomagnetic catalyst Heteropolyacid Keggin Tetrahydrobenzo [b]pyran Pyrano[2,3-c]pyrazole
Abstract	A powerful, magnetic, supported, acid catalyst, NiFe2O4@SiO2– H3PW12O40, was prepared by chemical support of Keggin (H3PW12O40) heteropolyacid (HPA) on silica-coated NiFe2O4 magnetic nanoparticles. XRD, TEM, SEM, VSM, and FTIR confirmed that the keggin HPA is well dispersed on the surface of silica-coated NiFe2O4 magnetic nanoparticles. The magnetically recoverable catalyst could be easily recycled at least six times without significant loss of catalytic activity. After full characterization, its catalytic activity was investigated in the synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3-c]pyrazole derivatives
Researchers	Omid Pourshiani (Not In First Six Researchers), Samaneh Sedigh Ashrafi (Not In First Six Researchers), Amir Khojastehnezhad (Fifth Researcher), Negar Nasiri (Fourth Researcher), Mohammad Barghamadi (Third Researcher), Hossein Eshghi (Second Researcher), Behrooz Maleki (First Researcher)