Transforming carbon dioxide into a methanol surrogate using modular transition metal-free Zintl ions

Bono IJzendoorn, Saad F. Albawardi, William D. Jobbins, George F. S. Whitehead, John E. McGrady () and Meera Mehta ()
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Bono IJzendoorn: University of Oxford
Saad F. Albawardi: University of Oxford
William D. Jobbins: University of Manchester
George F. S. Whitehead: University of Manchester
John E. McGrady: University of Oxford
Meera Mehta: University of Oxford

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Although not the only greenhouse gas, CO2 is the poster child. Unsurprisingly, therefore, there is global interest across industrial and academic research in its removal and subsequent valorisation, including to methanol and its surrogates. Although difficult to study, the heterogenous pnictogens represent one important category of catalytic materials for these conversions; their high crustal abundance and low cost offers advantages in terms of sustainability. Here, Zintl clusters based on these elements are studied as homogenous atom-precise models in CO2 reduction. A family of group 13 functionalized pnictogen clusters with the general formula [(R2E)Pn7]2– (E = B, Al, In; Pn = P, As) is synthesized and their catalytic competency in the reduction of CO2 probed. Trends in both turnover numbers and frequencies are compared across this series, and [(iBu2Al)P7]2– found to be very high-performing and recyclable. Electronic structures across the series are compared using density functional theory to provide mechanistic insights.

Date: 2024
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DOI: 10.1038/s41467-024-54277-z

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