Subnanometric Cu clusters on atomically Fe-doped MoO<sub>2</sub> for furfural upgrading to aviation biofuels.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35546157.
- Also identified by DOI 10.1038/s41467-022-30345-0 and PMC identifier 9095587.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Single cluster catalysts (SCCs) are considered as versatile boosters in heterogeneous catalysis due to their modifiable single cluster sites and supports. In this work, we report subnanometric Cu clusters dispersed on Fe-doped MoO<sub>2</sub> support for biomass-derived furfural upgrading. Systematical characterizations suggest uniform Cu clusters (composing four Cu atoms in average) are homogeneously immobilized on the atomically Fe-doped ultrafine MoO<sub>2</sub> nanocrystals (Cu<sub>4</sub>/Fe<sub>0.3</sub>Mo<sub>0.7</sub>O<sub>2</sub>@C). The atomic doping of Fe into MoO<sub>2</sub> leads to significantly modified electronic structure and consequently charge redistribution inside the supported Cu clusters. The as-prepared Cu<sub>4</sub>/Fe<sub>0.3</sub>Mo<sub>0.7</sub>O<sub>2</sub>@C shows superior catalytic performance in the oxidative coupling of furfural with C<sub>3</sub>~C<sub>10</sub> primary/secondary alcohols to produce C<sub>8</sub>~C<sub>15</sub> aldehydes/ketones (aviation biofuel intermediates), outperforming the conventionally prepared counterparts. DFT calculations and control experiments are further carried out to interpret the structural and compositional merits of Cu<sub>4</sub>/Fe<sub>0.3</sub>Mo<sub>0.7</sub>O<sub>2</sub>@C in the oxidative coupling reaction, and elucidate the reaction pathway and related intermediates.
Medical subject headings
- Aviation
- Furaldehyde