Selective Conversion of Renewable Furfural with Ethanol to Produce Furan-2-acrolein Mediated by Pt@MOF‑5

The selective conversion of furfural (FUR) with ethanol to produce furan-2-acrolein has been successfully performed in the presence of O₂, in which metal organic framework (MOF) supported platinum nanoparticles (Pt@MOF-5, Pt@UIO-66, and Pt@UIO-66-NH₂) were used as the catalysts. Under the optimal conditions, 84.1% conversion of FUR and 90.1% selectivity of furan-2-acrolein was obtained with Pt@MOF-5 as the catalyst. Moreover, the catalysts were characterized by XRD, H₂-TPR, HRTEM, HRSEM, and XPS techniques, with the synergetic effect of well-dispersed platinum nanoparticles in the MOF-5 channel. In addition, the results of the recycling experiment exhibited that there was no significant loss after the catalyst was reused 5 times

Sustainable and Cost-Effective Protocol for Cascade Oxidative Condensation of Furfural with Aliphatic Alcohols

The oxidative condensation of furfural with aliphatic alcohols catalyzed by the supported Co_<i>x</i>O_<i>y</i>–N catalysts is developed in the presence of molecular oxygen. For the oxidative condensation process of furfural, <i>n</i>-propanol and dioxygen, a 75.1% conversion of furfural and 92.8% selectivity of 3-(furan-2-yl-)-2-methylacryaldehyde was obtained when the Co_<i>x</i>O_<i>y</i>–N@K-10 and cesium carbonate was employed as catalytic system. Moreover, the reaction conditions were optimized and the oxidative condensation of furfural with different aliphatic alcohols was also investigated. The synergistic effect between the Co_<i>x</i>O_<i>y</i>–N@K-10 and basic additive was considered to be responsible for this cascade process. Furthermore, a possible reaction mechanism is proposed for oxidative condensation of furfural–<i>n</i>-propanol–O₂ (FPO) system