OICC Press Iranian Journal of Catalysis 2345-4865 3 1 2024 02 03 Nano SiO2/H2SO4 as catalyst for the Beckmann rearrangement and deoximation of aldoximes EN Marziyeh Bagheri Department of Chemistry, Faculty of Science, Urmia University, Urmia 57159-165, Iran. Mostafa Karimkoshteh Department of Chemistry, Faculty of Science, Urmia University, Urmia 57159-165, Iran. Journal Article 2024 02 03 Nano silica-H2SO4 is an efficient and mild catalysis system for the regeneration of aldehyde from aldoximes. Ketoximes are converted to amides by Beckmann rearrangement in the presence of nano silica-H2SO4. The reactions are carried out in solvent-free conditions under microwave irradiation (600 W) within 50-120 sec in good yields.