Issue 37, 2016

Highly efficient dehydrogenation of formic acid in aqueous solution catalysed by an easily available water-soluble iridium(iii) dihydride

Abstract

The new water-soluble cis-mer-[IrH2Cl(mtppms)3] (mtppms = monosulfonated triphenylphosphine) was employed as a catalyst for selective decomposition of formic acid to H2 + CO2 in aqueous solution at T = 30–100 °C. The easily synthesized compound showed high catalytic activity (TOF up to 298 000 h−1) and could be reused several times with no loss of activity (total TON = 67 650). A sharp maximum in the reaction rate was observed at pH = 3.75; its coincidence with the pKa of formic acid shows that both H+ or HCOOH and HCOO play important roles in the reaction mechanism.

Graphical abstract: Highly efficient dehydrogenation of formic acid in aqueous solution catalysed by an easily available water-soluble iridium(iii) dihydride

Supplementary files

Article information

Article type
Communication
Submitted
29 apr 2016
Accepted
26 mei 2016
First published
27 mei 2016

Dalton Trans., 2016,45, 14516-14519

Author version available

Highly efficient dehydrogenation of formic acid in aqueous solution catalysed by an easily available water-soluble iridium(III) dihydride

G. Papp, G. Ölveti, H. Horváth, Á. Kathó and F. Joó, Dalton Trans., 2016, 45, 14516 DOI: 10.1039/C6DT01695B

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