Title : One pot hydrogenation esterification of furfural with acetic acid for the selective synthesis of furfuryl acetate over bifunctional Pd(at)UiO 66(Hf) catalyst
Abstract:
Development of new strategies for tandem reactions that demands composite catalyst with multifunctionality is essential for bio-oil upgradation. This work focuses on a model bio-oil-upgrading method, one-pot hydrogenation-esterification (OHE) of furfural with acetic acid for the selective synthesis of furfuryl acetate using a bifunctional Pd@UiO-66(Hf) core-shell material. For comparison, the catalytic performance of support material [Pd/UiO-66(Hf)] synthesized by simple impregnation method was studied in the OHE reaction. The physicochemical properties of the materials have been systematically studied by employing various characterization techniques. Here, the high-synergistic effect of Brønsted acidic sites over SBU (Secondary building unit) of MOF and Pd NPs (Nanoparticles) in the core-shell material over Pd/UiO-66(Hf) is reflected in terms of the catalytic activity of the materials. The core-shell material demonstrated high catalytic activity with 56.6% yield of furfuryl acetate as compared to Pd/UiO-66(Hf) hybrid material (38.7% yield). The excellent performance exhibited by Pd@UiO66(Hf) outperformed the reported materials for this transformation. This avenue opens up the opportunities for the efficient transformation of bio-derived molecules into value-added products using bifunctional hybrid materials.
