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Turning on Low-Temperature Catalytic Conversion of Biomass Derivatives through Teaming Pd and Mo Single-Atom Sites. | LitMetric

Turning on Low-Temperature Catalytic Conversion of Biomass Derivatives through Teaming Pd and Mo Single-Atom Sites.

J Am Chem Soc

Center for Environmental Beneficial Catalysis and Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States.

Published: November 2024

AI Article Synopsis

Article Abstract

On-purpose atomic scale design of catalytic sites, specifically active and selective at low temperature for a target reaction, is a key challenge. Here, we report teamed Pd and Mo single-atom sites that exhibit high activity and selectivity for anisole hydrodeoxygenation to benzene at low temperatures, 100-150 °C, where a Pd metal nanoparticle catalyst or a MoO nanoparticle catalyst is individually inactive. The catalysts built from Pd or Mo single-atom sites alone are much less effective, although the catalyst with Pd sites shows some activity but low selectivity. Similarly, less dispersed nanoparticle catalysts are much less effective. Computational studies show that the Pd and Mo single-atom sites activate H and anisole, respectively, and their combination triggers the hydrodeoxygenation of anisole in this low-temperature range. The CoO support is inactive for anisole hydrodeoxygenation by itself but participates in the chemistry by transferring H atoms from Pd to the Mo site. This finding opens an avenue for designing catalysts active for a target reaction channel such as conversion of biomass derivatives at a low temperature where neither metal nor oxide nanoparticles are.

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Source
http://dx.doi.org/10.1021/jacs.4c07075DOI Listing

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