Journal
GREEN CHEMISTRY
Volume 19, Issue 18, Pages 4353-4363Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7gc01387f
Keywords
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Funding
- National Natural Science Foundation of China [21325624, 21521005]
- Fundamental Research Funds for the Central Universities [buctrc201528]
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2,5-Dimethylfuran (DMF) and phenol are considered as one of the new-fashioned liquid transportation biofuels and a key motif for industrial chemicals, respectively. Herein, a highly efficient vapor-phase dehydrogenation-hydrogenation coupling process over bimetallic Ni-Cu alloy nanocatalysts was established for the synchronized production of phenol and DMF with unprecedentedly high yields (> 97%) from two cyclohexanol (CHL) and biomass-derived 5-hydroxymethylfurfural (HMF) substrates, without any external hydrogen and oxygen supply. Systematic characterization and catalytic experiments revealed that the production of phenol went through a consecutive triple-dehydrogenation process from CHL, while HMF was simultaneously hydrogenated into DMF using active hydrogen species generated from the dehydrogenation process. The bimetallic Ni-Cu alloy nanostructures derived from Ni-Cu-Al layered double hydroxide precursors and strong metal-support interactions play important roles in governing the present coupling process. An appropriate Ni-Cu alloy nanostructure could greatly facilitate the dehydrogenative aromatization of CHL, thus significantly improving the selectivities to both phenol and DMF. Such an unparalleled efficient, eco-friendly and versatile coupling process for the synchronized production of various substituted phenols and DMF makes it practically promising for large-scale industrial applications in terms of green chemistry and sustainable development.
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