Synthesis and characterization of Si-Zr-Mo nanocomposite as a rapid and efficient catalyst for aromatization of Hantzsch 1,4-dihydropyridines |
| |
Authors: | Masoomeh Sharbatdaran Leila Jafari Foruzin Faezeh Farzaneh Majid Mojtahedzadeh Larijani |
| |
Institution: | 1. Department of Chemistry, Alzahra University, Vanak, Tehran, 1993891176, Iran;2. Agricultural, Medical and Industrial Research School, NSTRI, Karaj, 31485/498, Iran |
| |
Abstract: | Nanocomposite of Silica-zirconia-molybdate designated as Si-Zr-Mo was prepared via the reaction of the in situ generated zirconium-tetra octanoxide Zr(Oct)4] through condensation of zirconium-tetra-n-butoxide and 1-octanol in a sol–gel method with sulfuric acid and tetraethylorthosilicate (TEOS) followed by grafting of MoO42? on modified silico zirconia nanocomposite under reflux conditions. The prepared nanocomposite was characterized using inductively coupled plasma (ICP), N2 sorption isotherms, transmission electron microscopy (TEM), and FT-IR spectroscopy. The as prepared nanocomposite had a surface area and pore dimension of 140 m2/g and 1.48 nm, respectively. The morphology of sulphated silico zirconia nanocomposite after immobilization MoO42? has been changed from nanoparticles to nanaorods. It was found that the synthesized nanocomposite successfully catalyze the oxidative dehydrogenation of 1,4-dihydropyridines (1,4-DHPs) with 92–100% conversion and 80–100% selectivity toward the desired products. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|