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A ligand design strategy to enhance catalyst stability for efficient formic acid dehydrogenation.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 4/21/2023, Vol. 52 Issue 15, p4856-4861, 6p
- Publication Year :
- 2023
-
Abstract
- New Ir complexes bearing N-(methylsulfonyl)-2-pyridinecarboxamide (C1) and N-(phenylsulfonyl)-2-pyridinecarboxamide (C2) were employed as catalysts for aqueous formic acid dehydrogenation (FADH). The ligands were designed to maintain the picolinamide skeleton and introduce strong sigma sulfonamide moieties. C1 and C2 exhibited good stability towards air and concentrated formic acid (FA). During 20 continuous cycles, C1 and C2 could achieve the complete conversion of FA with TONs of 172 916 and 172 187, respectively. C1 achieved a high TOF of 19 500 h<superscript>−1</superscript> at 90 °C and an air-stable Ir–H species was observed by <superscript>1</superscript>H NMR spectroscopy. [ABSTRACT FROM AUTHOR]
- Subjects :
- FORMIC acid
DEHYDROGENATION
NUCLEAR magnetic resonance spectroscopy
CATALYSTS
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 52
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 163015119
- Full Text :
- https://doi.org/10.1039/d2dt04079d