TY - EJOUR
AU - Bamoniri, Abdolhamid
AU - Mirjalili, Bi Bi Fatemeh
AU - Yaghmaeiyan-Mahabadi, Nahid
PY - 2024
DA - February
TI - An environmentally friendly approach to the synthesis of azo dyes based on 2-naphthol using kaolin-SO3H nanoparticles
T2 - Iranian Journal of Catalysis
VL - 8
L1 - https://oiccpress.com/iranian-journal-of-catalysis/article/an-environmentally-friendly-approach-to-the-synthesis-of-azo-dyes-based-on-2-naphthol-using-kaolin-so3h-nanoparticles/
N2 - Kaolin-SO3H nanoparticles were prepared via reaction of kaolin and chlorosulfonic acid and characterized by FT-IR, XRD, FESEM, TEM, XRF, EDS, BET and TGA. The activity of this green catalyst was probed by the synthesis of aryl diazonium salts as the starting reactant and then, their diazo coupling with  2-naphthol to form azo dyes in a solvent-free medium at room temperature. The work-up of the reaction was easy, and the catalyst was removed from the products by simple filtration. The reaction proceeded in a short time, easy purification technique, high yields, and was environmentally friendly furthering approaches to green chemistry. The products were characterized by FT-IR and NMR spectroscopy.
IS - 2
PB - OICC Press
KW - 2-Naphthol, Kaolin-SO3H, Diazo coupling. Solvent-free, nanoparticles, Diazonium salt. 
EN -