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Tuning the activity of supported metals by changing the properties of supports is a highly attractive strategy to realize some important reactions in biomass transformation. Herein, Ru nanoparticles supported on montmorillonite (MMT) and hydroxyapatite (HAP), denoted as Ru/MMT and Ru/HAP, were prepared. It was found that the activity of the Ru catalysts for different routes to convert biomass-derived 2,5-hexanedione (2,5-HD) could be controlled by the support materials. Ru/MMT was active for the synthesis of dimethyltetrahydrofuran from hydrogenation of 2,5-HD at 90 °C, while Ru/HAP showed excellent performance on the conversion of 2,5-HD into N-substituted tetrahydropyrroles at 30 °C via direct reductive amination. Systematic study revealed that the property of support materials influenced the activity of Ru/MMT and Ru/HAP for the different routes, affording different reaction pathways for conversion of 2,5-HD.
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Hua et al. (2021) studied this question.
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