Safe, One-Pot, Homogeneous Direct Synthesis of H2O2

Hydrogen peroxide is an environmentally friendly oxidizing agent but current synthetic methods are wasteful. This is a result of the high flammability of H2/O2 mixtures and/or the requirement for cocatalysts. In this paper, we report the synthesis of H2O2 by means of a homogeneous catalyst, which al...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2023-03, Vol.145 (8), p.4384-4388
Main Authors: Ogo, Seiji, Yatabe, Takeshi, Tome, Tamon, Takenaka, Riko, Shiota, Yoshihito, Kato, Kenji
Format: Article
Language:English
Subjects:
Communication
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Summary:Hydrogen peroxide is an environmentally friendly oxidizing agent but current synthetic methods are wasteful. This is a result of the high flammability of H2/O2 mixtures and/or the requirement for cocatalysts. In this paper, we report the synthesis of H2O2 by means of a homogeneous catalyst, which allows a safe, one-pot synthesis in water, using only H2 and O2. This catalyst is capable of removing electrons from H2, storing them for the reduction of O2, and then permitting the protonation of the reduced oxygen to H2O2. The turnover number (TON) is 910 under an H2/O2 (95/5) atmosphere (1.9 MPa) for 12 h at 23 °C, which is the highest of any homogeneous catalyst. Furthermore, we propose a reaction mechanism based on two crystal structures.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.2c13149