Iridium(NHC)-Catalyzed Sustainable Transfer Hydrogenation of CO2 and Inorganic Carbonates

Iridium(NHC)-catalyzed transfer hydrogenation (TH) of CO2 and inorganic carbonates with glycerol were conducted, demonstrating excellent turnover numbers (TONs) and turnover frequencies (TOFs) for the formation of formate and lactate. Regardless of carbon sources, excellent TOFs of formate were obse...

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Bibliographic Details
Published in:Catalysts 2021-06, Vol.11 (6), p.695
Main Authors: Cheong, Yeon-Joo, Sung, Kihyuk, Kim, Jin-A, Kim, Yu Kwon, Yoon, Woojin, Yun, Hoseop, Jang, Hye-Young
Format: Article
Language:English
Subjects:
Carbon dioxide
Carbonates
Catalysts
Catalytic activity
Chemical reactions
Glycerol
High temperature
Hydrogen
Hydrogenation
inorganic carbonate
Iridium
iridium(NHC)
Ligands
Potassium carbonate
Sustainability
transfer hydrogenation
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Summary:Iridium(NHC)-catalyzed transfer hydrogenation (TH) of CO2 and inorganic carbonates with glycerol were conducted, demonstrating excellent turnover numbers (TONs) and turnover frequencies (TOFs) for the formation of formate and lactate. Regardless of carbon sources, excellent TOFs of formate were observed (CO2: 10,000 h−1 and K2CO3: 10,150 h−1). Iridium catalysts modified with the triscarbene ligand showed excellent catalytic activity at 200 °C and are a suitable choice for this transformation which requires a high temperature for high TONs of formate. On the basis of the control experiments, the transfer hydrogenation mechanism of CO2 was proposed.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal11060695