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 af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

46 Citationer (Scopus)

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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).

Originalsprog	Engelsk
Tidsskrift	ACS Catalysis
Vol/bind	10
Nummer	13
Sider (fra-til)	7336-7342
Antal sider	7
ISSN	2155-5435
DOI	https://doi.org/10.1021/acscatal.0c02176
Status	Udgivet - 2020

Adgang til dokumentet

10.1021/acscatal.0c02176

acscatal.0c02176Forlagets udgivne version, 1,48 MBLicens: CC BY

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http://www.scopus.com/inward/record.url?scp=85089538631&partnerID=8YFLogxK

Citationsformater

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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).",

keywords = "benzylamine, carbon nitride, cheap, CO, K-PHI, oxidative coupling, photocatalysis, visible light",

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

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T1 - Advantages in Using Inexpensive CO2 to Favor Photocatalytic Oxidation of Benzylamines

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

N2 - 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).

AB - 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).

KW - benzylamine

KW - carbon nitride

KW - cheap

KW - CO

KW - K-PHI

KW - oxidative coupling

KW - photocatalysis

KW - visible light

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DO - 10.1021/acscatal.0c02176

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JO - ACS Catalysis

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