TY - JOUR ID - 64674 TI - Synthesis of Fe3O4/Eggshell Nanocomposite and Application for Preparation of Tetrahydrobenzo[b]Pyran Derivatives JO - Iranica Journal of Energy & Environment JA - IJEE LA - en SN - 2079-2115 AU - Naghizadeh, M. AU - Mohammadi, P. AU - Sheibani, H. AU - Taher, M. A. AD - Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, 76169, Iran Y1 - 2017 PY - 2017 VL - 8 IS - 2 SP - 136 EP - 141 KW - Fe3O4/eggshell KW - Tetrahydrobenzo[b]pyran derivatives KW - Nano composite DO - 10.5829/ijee.2017.08.02.06 N2 - This work is reported on the synthesis of Fe3O4/eggshell nanocomposites in the absence of any stabilizer or surfactant. Fe3O4 magnetic nanoparticles were established on the egg shell nano-composite. 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 Fe3O4/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. UR - https://www.ijee.net/article_64674.html L1 - https://www.ijee.net/article_64674_5057e81fec526918da75143b67fc830a.pdf ER -