Efficient catalytic decomposition of formic acid for the selective generation of H2 and H/D exchange with a water-soluble rhodium complex in aqueous solution

Shunichi Fukuzumi, Takeshi Kobayashi, Tomoyoshi Suenobu

Research output: Contribution to journalArticlepeer-review

196 Scopus citations

Abstract

Formic acid (HCOOH) decomposes efficiently to afford H2 and CO2 selectively in the presence of a catalytic amount of a watersoluble rhodium aqua complex, [RhIII(Cp*)(bpy) (H2O)]2+ (Cp*= pentamethylcyclopentadienyl, bpy=2,2'-bipyridine) in aqueous solution at 298 K. No CO was produced in this catalytic decomposition of HCOOH. The decomposition rate reached a maximum value at pH 3.8. No deterioration of the catalyst was observed during the catalytic decomposition of HCOOH, and the catalytic activity remained the same for the repeated addition of HCOOH. The rhodium-hydride complex was detected as the catalytic active species that undergoes efficient H/D exchange with water. When the catalytic decomposition of HCOOH was performed in D2O, D2 was produced selectively. Such an efficient H/D exchange and the observation of a deuterium kinetic isotope effect in the catalytic decomposition of DCOOH in H2O provide valuable mechanistic insight into this efficient and selective decomposition process.

Original languageEnglish
Pages (from-to)827-834
Number of pages8
JournalChemSusChem
Volume1
Issue number10
DOIs
StatePublished - 24 Oct 2008

Keywords

  • Formic acid
  • Homogeneous catalysis
  • Hydrogen
  • Isotope effects
  • Rhodium

Fingerprint

Dive into the research topics of 'Efficient catalytic decomposition of formic acid for the selective generation of H2 and H/D exchange with a water-soluble rhodium complex in aqueous solution'. Together they form a unique fingerprint.

Cite this