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Safe, One-Pot, Homogeneous Direct Synthesis of H₂O₂.

ABSTRACT: 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.

SUBMITTER: Ogo S

PROVIDER: S-EPMC9983002 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Safe, One-Pot, Homogeneous Direct Synthesis of H2O2.

Ogo Seiji S Yatabe Takeshi T Tome Tamon T Takenaka Riko R Shiota Yoshihito Y Kato Kenji K

Journal of the American Chemical Society 20230216 8

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, stor ...[more]

PMID: 36798970

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