Conversion of Ammonia to Hydrazine Induced by High?Frequency Ultrasound

Hydrazine is a chemical of utmost importance in our society, either for organic synthesis or energy use. The direct conversion NH3 to hydrazine highly appealing, but it remains very difficult task because the degradation thermodynamically more feasible than cleavage N?H bond NH3. As result, any catalyst capable activating will thus unavoidably decompose N2H4. Here we show that cavitation bubbles, created by ultrasonic irradiation aqueous at high frequency, act as microreactors activate and convert NH species, without assistance catalyst, yielding bubble–liquid interface. compartmentation in-situ-produced bulk solution, which maintained close 30 °C, advantageously prevents its thermal degradation, recurrent problem faced previous technologies. This work also points towards path scavenge .OH radicals adjusting concentration.