Precapture of CO2 and Hydrogenation into Methanol on Heterogenized Ruthenium and Amine-Rich Catalytic Systems

Anthony E Szego; Tamara L Church; Zoltán Bacsik; Aleksander Jaworski; Latif Ullah; Niklas Hedin

doi:10.1002/open.202300060

Precapture of CO₂ and Hydrogenation into Methanol on Heterogenized Ruthenium and Amine-Rich Catalytic Systems

ChemistryOpen. 2023 Jun;12(6):e202300060. doi: 10.1002/open.202300060.

Authors

Anthony E Szego¹, Tamara L Church^{1

2}, Zoltán Bacsik¹, Aleksander Jaworski¹, Latif Ullah¹, Niklas Hedin¹

Affiliations

¹ Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden.
² Current address: Cambrex Karlskoga AB, 691 33, Karlskoga, Sweden.

Abstract

A heterogenized alternative to the homogeneous precapture of CO₂ with amines and subsequent hydrogenation to MeOH was developed using aminated silica and a Ru-MACHO^TM catalyst. Commercial mesoporous silica was modified with three different amino-silane monomers and used as support for the Ru catalyst. These composites were studied by TEM and solid-state NMR spectroscopy before and after the catalytic reaction. These catalytic reactions were conducted at 155 °C at a H₂ and CO₂ pressures of 75 and 2 bar, respectively, with the heterogeneous system (gas-solid) being probed with gas-phase infrared spectroscopy used to quantify the resulting products. High turnover number (TON) values were observed for the samples aminated with secondary amines.

Keywords: carbon dioxide; heterogeneous catalysis; hydrogenation; methanol; ruthenium.

Abstract

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