| Authors | Abdolhamid Bamoniri, Nahid Yaghmaeiyan, Sayed Mohammad Hosein Omidvar |
|---|---|
| Journal | results in chemistry |
| Page number | 100853 |
| Volume number | 5 |
| IF | ثبت نشده |
| Paper Type | Full Paper |
| Published At | 2023-02-18 |
| Journal Grade | Scientific - research |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
| Journal Index | SCOPUS ,ISI-Listed |
Abstract
A green heterogeneous solid acid was prepared as an extremely efficient catalyst, through the reaction of γ-alumina with titanium tetrachloride. Nano TiCl4/γ-Al2O3 was characterized by fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), Brunner–Emmet–Teller (BET) surface area analysis, X-ray fluorescence (XRF) and thermal gravimetric analysis (TGA). Nano TiCl4/γ-Al2O3 was used for the synthesis of aryl diazonium salts as the starting reactant and then, diazo coupling with 2-naphthol produced the azo dyes in a solvent-free medium at room temperature (25 ◦C). The work-up of the reaction is easy, and the catalyst is removed from the products by simple filtration.