Metallolinker-Functionalized MOF Catalysts for CO2 Hydrogenation

Project Information

TUNEMOF

Grant agreement ID: 101061858

DOI

10.3030/101061858

Project closed

EC signature date 27 June 2022

Start date 15 August 2022

End date 14 February 2025

Funded under

• Marie Skłodowska-Curie Actions (MSCA)

Total cost

No data

EU contribution

€ 263 638,80

Coordinated by

UNIVERSITETET I OSLO
Norway

Periodic Reporting for period 1 - TUNEMOF (Metallolinker-Functionalized MOF Catalysts for CO2 Hydrogenation)

Reporting period: 2022-08-15 to 2025-02-14

Summary of the context and overall objectives of the project

One of the main challenges of the 21st century is to reduce CO2 emissions in the atmosphere. To overcome this problem, fossil fuels can be replaced by renewable energy sources. Methanol is one of the sustainable key compounds that can be directly used as a low-density fuel or as a feedstock for valuable chemicals. To date, efforts to perform CO2 hydrogenation to methanol under mild reaction conditions have not achieved high enough selectivity at reasonable conversion values. Heterogeneous catalysts are robust and easy to recover but usually yield low selectivity due to the difficult control of the active sites. In contrast, homogeneous catalysts feature well-defined active sites amenable to logical optimization and selectivity design, but inefficient catalyst recovery and decomposition are huge shortcomings for industrial implementation. A promising strategy to combine benefits from both approaches is to immobilize well-defined catalysts on solid porous materials, such as metal-organic frameworks (MOFs).
TUNEMOF’s goal is the preparation of functionalized MOFs bearing earth-abundant metals (Mn and Cu) as catalysts for CO2 hydrogenation to methanol. In addition, TUNEMOF aims to gain insight into the key steps of the catalytic cycle, identifying the potential key intermediates and processes of catalyst deactivation.

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

Different ligands containing the skeleton to be incorporated into MOFs were successfully synthesized and characterized using standard analytical techniques. These new ligands were used to prepare manganese, copper, and iridium coordination complexes. The coordination mode of the ligands changed depending on the metal employed. Thus, manganese complexes had a bi- or tridentate coordination of the ligands while those of copper and iridium were mono- or bidentate.
The new complexes were heterogenized by incorporating them into the linkers of MOF structures. All new MOFs were crystalline by X-ray diffraction and were characterized using standard characterization techniques for porous materials. The reactivity of the new materials has also been studied.

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

The scientific knowledge generated during the preparation of the new materials in TUNEMOF is of great value to the state of the art of the development of new organometallic compounds and porous materials. The study of the mechanism of the hydrogenation of CO2 will help to overcome the barriers to the industrial implementation of renewable and sustainable energies.