Resonant acoustic mixing (RAM) for efficient mechanoredox catalysis without grinding or impact media

Farshid Effaty, Lori Gonnet, Stefan G Koenig, Karthik Nagapudi, Xavier Ottenwaelder, Tomislav Friščić

Abstract: Resonant acoustic mixing (RAM) enables mechanoredox catalysis with BaTiO3 as the piezoelectric catalyst on model diazonium coupling reactions. RAM proceeds without formal grinding or impact media, is faster than the analogous ball-milling strategy, and is readily scalable. X-ray diffraction and spectroscopy indicate that reusability of BaTiO3 as a mechanoredox catalyst under ball-milling or RAM might be limited by boration.