Advantages in Using Inexpensive CO2 to Favor Photocatalytic Oxidation of Benzylamines

Yevheniia Markushyna; Paolo Lamagni; Jacopo Catalano; Nina Lock; Guigang Zhang; Markus Antonietti; Aleksandr Savateev

doi:10.1021/acscatal.0c02176

Advantages in Using Inexpensive CO₂to Favor Photocatalytic Oxidation of Benzylamines

Yevheniia Markushyna, Paolo Lamagni, Jacopo Catalano, Nina Lock, Guigang Zhang, Markus Antonietti, Aleksandr Savateev^*

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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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).

Original language	English
Journal	ACS Catalysis
Volume	10
Issue	13
Pages (from-to)	7336-7342
Number of pages	7
ISSN	2155-5435
DOIs	https://doi.org/10.1021/acscatal.0c02176
Publication status	Published - 2020

Keywords

benzylamine
carbon nitride
cheap
CO
K-PHI
oxidative coupling
photocatalysis
visible light

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10.1021/acscatal.0c02176

acscatal.0c02176Final published version, 1.48 MBLicence: CC BY

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title = "Advantages in Using Inexpensive CO2 to Favor Photocatalytic Oxidation of Benzylamines",

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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author = "Yevheniia Markushyna and Paolo Lamagni and Jacopo Catalano and Nina Lock and Guigang Zhang and Markus Antonietti and Aleksandr Savateev",

year = "2020",

doi = "10.1021/acscatal.0c02176",

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volume = "10",

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journal = "ACS Catalysis",

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AU - Markushyna, Yevheniia

AU - Lamagni, Paolo

AU - Catalano, Jacopo

AU - Lock, Nina

AU - Zhang, Guigang

AU - Antonietti, Markus

AU - Savateev, Aleksandr

PY - 2020

Y1 - 2020

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KW - benzylamine

KW - carbon nitride

KW - cheap

KW - CO

KW - K-PHI

KW - oxidative coupling

KW - photocatalysis

KW - visible light

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ER -

Advantages in Using Inexpensive CO₂to Favor Photocatalytic Oxidation of Benzylamines

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Keywords

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