کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
59932 1419433 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones
چکیده انگلیسی

A novel magnetic acidic catalyst comprising Preyssler (H14[NaP5W30O110]) heteropoly acid supported on silica coated nickel ferrite nanoparticles (NiFe2O4@SiO2) was prepared. The catalyst was characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy dispersive spectrum, VSM and particle size neasurement. Its catalytic activity was investigated for the synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones derivatives by the Biginelli reaction. With the catalyst, the reactions occurred in less than 1 h with good to excellent yields. More importantly, the catalyst was easily separated from the reaction mixture by an external magnet and reused at least five times without degradation in the activity.

Graphical AbstractA novel magnetic acidic catalyst comprising Preyssler HPA supported on silica coated nickel ferrite nanoparticles was prepared and its catalytic activity in the Biginelli reaction was investigated.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 36, Issue 3, March 2015, Pages 299–307
نویسندگان
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