In:
Angewandte Chemie, Wiley, Vol. 133, No. 48 ( 2021-11-22), p. 25434-25438
Abstract:
Hydrazine is a chemical of utmost importance in our society, either for organic synthesis or energy use. The direct conversion of NH 3 to hydrazine is highly appealing, but it remains a very difficult task because the degradation of hydrazine is thermodynamically more feasible than the cleavage of the N−H bond of NH 3 . As a result, any catalyst capable of activating NH 3 will thus unavoidably decompose N 2 H 4 . Here we show that cavitation bubbles, created by ultrasonic irradiation of aqueous NH 3 at a high frequency, act as microreactors to activate and convert NH 3 to NH species, without assistance of any catalyst, yielding hydrazine at the bubble–liquid interface. The compartmentation of in‐situ‐produced hydrazine in the bulk solution, which is maintained close to 30 °C, advantageously prevents its thermal degradation, a recurrent problem faced by previous technologies. This work also points towards a path to scavenge . OH radicals by adjusting the NH 3 concentration.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v133.48
DOI:
10.1002/ange.202109516
Language:
English
Publisher:
Wiley
Publication Date:
2021
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