Performance enhancing additives for reusable ruthenium-triphos catalysts in the reduction of CO2to dimethoxymethane

Robert Konrath, Kohei Sekine, Ivana Jevtovikj, Rocco A. Paciello, A. Stephen K. Hashmi, Thomas Schaub

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The direct access to dimethoxymethane (DMM) from CO2/H2 in MeOH is an attractive approach, but more active, selective, and robust catalyst systems are still desirable for an application of this system. Herein, we present the performance enhancing effect of additives on ruthenium-triphos catalyst systems for CO2 hydrogenation to DMM. In the presence of PPh3, functioning as both additional ligand and precursor for Lewis-acidic phosphonium salts, increased turnover numbers for DMM are achieved. Moreover, PPh3 significantly diminishes catalyst degradation via carbonylation to cationic [RuH(CO)2(triphos)]OTf, which remains an active species in the synthesis of DMM. Catalyst recycling over up to five runs with minimal loss in catalyst performance underlines the robustness of the system. Both, the recyclability of the system and the suppression of catalyst deactivation pathways encourage for application in sustainable continuous processes. This journal is

Original languageEnglish
Pages (from-to)6464-6470
Number of pages7
JournalGreen Chemistry
Issue number19
Publication statusPublished - Oct 7 2020

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution

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