Self-tuned properties of CuZnO catalysts for hydroxymethylfurfural hydrodeoxygenation towards dimethylfuran production

5-Hydroxymethylfurfural (HMF) is a very valuable platform molecule obtained from biomass. It can be catalytically transformed to many industrially relevant products of both oxidation and reduction reactions. In this work, we showed that robust CuZnO can be an efficient, self-tuned catalyst for 2,5-d...

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Bibliographic Details
Published in:Catalysis science & technology 2020-02, Vol.10 (3), p.658-670
Main Authors: Brzezińska, Magdalena, Keller, Nicolas, Ruppert, Agnieszka M.
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Chemical reduction
Chemical Sciences
Chemical synthesis
Conversion
Copper
Hydroxymethylfurfural
Lewis acid
Oxidation
X ray photoelectron spectroscopy
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Summary:5-Hydroxymethylfurfural (HMF) is a very valuable platform molecule obtained from biomass. It can be catalytically transformed to many industrially relevant products of both oxidation and reduction reactions. In this work, we showed that robust CuZnO can be an efficient, self-tuned catalyst for 2,5-dimethylfuran (DMF) (biofuel additive) synthesis. We showed that CuZnO catalysts can be further activated in the reaction environment and this process depends strongly on the initial catalyst properties and therefore on the catalyst preparation method. Smaller copper particles are more active but more prone to carbon deposit formation. Based on activity tests and extensive characterization, we have concluded that both Cu n+ and Cu 0 sites are necessary for high HMF conversion. While these two sites favor high conversion and high 2,5-bishydroxymethylfuran (BHMF) yield, the in situ formation of Lewis acid sites is proposed to be necessary for achieving a high DMF yield.
ISSN:2044-4753
2044-4761
DOI:10.1039/C9CY01917K