naa a22 4500 510734804 CHVBK 20180411083006.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12039-013-0476-9 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0476-9 Synthesis, characterization and catalytic activity of sulphonated multi-walled carbon nanotubes as heterogeneous, robust and reusable catalysts for the synthesis of bisphenolic antioxidants under solvent-free conditions [Elektronische Daten] [REZA FAREGHI-ALAMDARI, MOHSEN GOLESTANZADEH, FARIMA AGEND, NEGAR ZEKRI] In this study, a simple and green method has been developed for the synthesis of bisphenolic antioxidants by the reaction of 2-tert-butyl-4-methylphenol and aldehydes in the presence of sulphonated multi-walled carbon nanotubes (MWCNTs-SO3H) as heterogeneous, robust and reusable catalysts under solvent-free conditions. MWCNTs-SO3H was prepared and characterized by some microscopic and spectroscopic techniques including scanning electron microscopy, transmission electron microscopy, FT-IR spectroscopy and Raman spectroscopy. Acidity of the catalyst was measured by acid-base titration. The catalyst was reused several times without efficient loss of its activity for the preparation of bisphenolic antioxidants. In addition, high yields of the products, relatively short reaction times, being solvent-free and non-toxicity of the catalyst are other worthwhile advantages of the present method. Graphical Abstract A simple and green method has been developed for the synthesis of bisphenolic antioxidants in the presence of MWCNTs-SO3H as heterogeneous and reusable catalysts under solvent-free conditions. Indian Academy of Sciences, 2013 Sulphonated carbon nanotubes nationallicence acidic catalyst nationallicence bisphenolic antioxidant nationallicence solvent-free nationallicence reusable catalyst nationallicence FAREGHI-ALAMDARI REZA Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut GOLESTANZADEH MOHSEN Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut AGEND FARIMA Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut ZEKRI NEGAR Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut Journal of Chemical Sciences Springer India 125/5(2013-09-01), 1185-1195 0974-3626 125:5<1185 2013 125 12039 https://doi.org/10.1007/s12039-013-0476-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0476-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- FAREGHI-ALAMDARI REZA Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut NATIONALLICENCE 700 1- GOLESTANZADEH MOHSEN Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut NATIONALLICENCE 700 1- AGEND FARIMA Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut NATIONALLICENCE 700 1- ZEKRI NEGAR Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, 16765-3454, Tehran, I. R., Iran aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer India 125/5(2013-09-01), 1185-1195 0974-3626 125:5<1185 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer