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A number of synthesized supported Pd nanomaterials on aluminosilicate supports were investigated in the continuous flow hydroconversion of furfural to a range of furanic derivatives as compared to a commercial Pd/C catalyst. Excellent furfural conversions (>60%) and varying selectivities to products at mild temperatures (90 °C) could be obtained for most catalytic systems, with interesting selectivities to furfuryl alcohol (FOL), 2-methylfuran (MF) and tetrahydrofurfuryl alcohol (THFOL) depending on type of Pd catalyst. A significant deactivation with time on stream was observed for continuous flow synthesized nanomaterials with respect to commercial 5%Pd/C. [ABSTRACT FROM AUTHOR]

A simple, innovative, and efficient continuous flow methodology for the direct preparation of supported nanoparticles on porous materials by using metal precursor solution flowing through heated packed-bed reactors containing the support material has been developed. The effects of the flow rate of the precursor solution, temperature, and nature of the support material and metal loading have been investigated. Results indicated that optimum conditions comprised short residence times (with typical flow rates of 0.5 mL min−1 and below) under mild heating (100 °C) to achieve optimum materials in terms of nanoparticle size and structure and catalytic activity. The support was found to have a remarkable effect on both loading and distribution and agglomeration of nanoparticles in the system, with a previously reported Fe/Al synergy also observed in the prepared nanomaterials, which led to optimum results. [ABSTRACT FROM AUTHOR]

This work compares the catalytic activity of iron catalysts supported on porous furfuryl alcohol derived resins for the selective conversion of benzyl alcohol to benzaldehyde using hydrogen peroxide as the oxidant and assisted by microwave irradiation. The catalysts were prepared mechanochemically by ball-milling in the dry state. Initial results showed that the pressure in the reaction medium and the oxidant load are essential to achieve significant conversions. An apparent minimum catalyst load of 0.05 mol% Fe was required for significant reactivity at 132 °C. [ABSTRACT FROM AUTHOR]