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  Advantages in using inexpensive CO2 to favor photocatalytic oxidation of benzylamines

Markushyna, Y., Lamagni, P., Catalano, J., Lock, N., Zhang, G., Antonietti, M., et al. (2020). Advantages in using inexpensive CO2 to favor photocatalytic oxidation of benzylamines. ACS Catalysis, 10(13), 7336-7342. doi:10.1021/acscatal.0c02176.

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 Creators:
Markushyna, Yevheniia1, Author              
Lamagni, Paolo1, Author              
Catalano, Jacopo, Author
Lock, Nina, Author
Zhang, Guigang1, Author              
Antonietti, Markus2, Author              
Savateev, Aleksandr1, Author              
Affiliations:
1Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2421702              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: Amines, Photocatalysts, Inorganic carbon compounds, Light
 Abstract: In this work, we investigate using carbon dioxide (CO2) as an inexpensive reaction medium during the photocatalytic oxidative coupling of primary amines to the corresponding imines. As a model system, we study the reaction of benzylamines in acetonitrile over a potassium poly(heptazine imide) photocatalyst (K-PHI). We use CO2 or argon (Ar) to saturate the reaction solution and the reactor headspace, and blue light (461 nm) to drive the reaction. When compared to the more expensive Ar, CO2 boosts the conversion rate by creating a reaction intermediate with better electron donor properties. We also validate the influence of water content on the imine formation efficiency, and we observe higher catalytic activity of K-PHI, compared to a standard mesoporous graphitic carbon nitride (mpg-CN).

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Language(s): eng - English
 Dates: 2020-06-172020
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1021/acscatal.0c02176
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Title: ACS Catalysis
  Abbreviation : ACS Catal.
Source Genre: Journal
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Publ. Info: Washington, DC : ACS
Pages: - Volume / Issue: 10 (13) Sequence Number: - Start / End Page: 7336 - 7342 Identifier: ISSN: 2155-5435