期刊
ACS CATALYSIS
卷 10, 期 13, 页码 7336-7342出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.0c02176
关键词
K-PHI; carbon nitride; photocatalysis; visible light; CO2; benzylamine; oxidative coupling; cheap
资金
- Deutsche Forschungsgemeinschaft [DFG-An 156 13-1]
- Danish National Research Foundation [DNRF 118]
- AU Synergy Grant
- Independent Research Fund Denmark [DFF-IPD 9059-00008B]
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 Imine Yield 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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