Work

Ionophilic Ru-SNS Complexes as Dual-Function Catalysts for CO 2 Hydrogenation and Formic Acid Dehydrogenation

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide This work presents homogeneous Ru complexes containing sulfur-based ionophilic ligands that exhibit high dual catalytic activity for CO 2 hydrogenation and formic acid dehydrogenation under mild conditions. Indeed, the ionophilic [RuCl 2 (SNS)(PPh 3 )] complexes promote the reduction of CO 2 to formate using DBU as a base, either in organic solvents (CH 3 CN or CH 3 CN/THF mixture, achieving TOFs of up to 1500 h –1 ) or in ionic liquids ([BMIm][NTf 2 ], [OMIm][NTf 2 ]) at 80 °C and 40 bar (20 bar CO 2, 20 bar H 2 ). Additionally, independent reactions demonstrated that formic acid can be dehydrogenated with TONs of up to 1540 at the same temperature. Notably, one-pot recycling experiments revealed that the ionophilic Ru complexes are also capable of promoting CO 2 hydrogenation to formate and its subsequent dehydrogenation at 80 °C, providing evidence that these ionophilic Ru complexes are active sulfur-based catalysts for enabling a versatile cycle of hydrogenation/dehydrogenation reactions.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.5c03184

Authors: Gabriela I. Matiello, Cecília A. Silveira, Gustavo Chacón, Hubert K. Stassen, Jackson D. Scholten

Institutions: Universidade Federal do Rio Grande do Sul, Consejo Superior de Investigaciones Científicas, Instituto de Tecnología Química, Universitat Politècnica de València

Language: English

Topic: Carbon dioxide utilization in catalysis

Subfield: Process Chemistry and Technology

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500