期刊名称：Iranica Journal of Energy and Environment (IJEE)
印刷版ISSN：2079-2115
电子版ISSN：2079-2123
出版年度：2017
期号：2
页码：136-141
语种：English
出版社：Noshirvani University of TEchnology
摘要：This work is reported on the synthesis of Fe 3 O 4 /eggshell nanocomposites in the absence of any stabilizer or surfactant.Fe 3 O 4 magnetic nanoparticles were established on the egg shell nanocomposite. The nanocompositeshave shown high catalytic activities in the synthesis of Tetrahydrobenzo[b]pyran. These derivatives were synthesized via an one‐pot three‐component condensation of aromatic aldehydes with malononitrile and dimedonewith excellent yields in the presence of Fe 3 O 4 /eggshell nanocomposites as a highly efficient heterogeneous catalyst. The obtained catalyst was characterized by Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FE-SEM), X-ray diffraction analysis (XRD) and Vibrating sample magnetometer (VSM). The developed technique of nano-composite synthesis is energy efficient since the reactions carried out in single step. The present catalyst is possible to be used for the production of biodiesel.
