Dehydrogenation of Formic Acid Catalyzed by a Ruthenium Complex with an N,N′-Diimine Ligand

Chao Guan, Dandan Zhang, Yupeng Pan, Masayuki Iguchi, Manjaly John Ajitha, Jinsong Hu, Huaifeng Li, Changguang Yao, Mei-Hui Huang, Shixiong Min, Junrong Zheng, Yuichiro Himeda, Hajime Kawanami, Kuo-Wei Huang

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Abstract

We report a ruthenium complex containing an N,N′-diimine ligand for the selective decomposition of formic acid to H and CO in water in the absence of any organic additives. A turnover frequency of 12000 h and a turnover number of 350 000 at 90 °C were achieved in the HCOOH/HCOONa aqueous solution. Efficient production of high-pressure H and CO (24.0 MPa (3480 psi)) was achieved through the decomposition of formic acid with no formation of CO. Mechanistic studies by NMR and DFT calculations indicate that there may be two competitive pathways for the key hydride transfer rate-determining step in the catalytic process.
Original languageEnglish (US)
Pages (from-to)438-445
Number of pages8
JournalInorganic Chemistry
Volume56
Issue number1
DOIs
StatePublished - Dec 16 2016

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