Synthesis, characterization and catalytic activity of UiO-66-NH2 in the levulinic acid esterification.

BRAVO FUCHINECO, DAIANA ANTONELLA; HEREDIA, ANGÉLICA CONSTANZA; BÁLSAMO, NANCY FLORENTINA; ARGÜELLO, DALMA SOFÍA; GERBALDO, MARÍA VERÓNICA; RODRÍGUEZ, CASTELLÓN ENRIQUE; CRIVELLO, MÓNICA ELSIE

Puerto Vallarta

Congreso; XXVII CONGRESO IBEROAMERICANO DE CATÁLISIS; 2020

The massive use of petroleum and its depletion promoted current research trend to the study of alternative raw materials from biomass for organic reactions. In this context, the present work studied the catalytic reaction of esterification of levulinic acid, platform molecule, with ethanol. The MOF type compounds UiO-66-NH2 have been synthesized. Zirconium was incorporated as metal precursor together with 2-aminoterephthalate acid as an organic binding agent. An alternative route of synthesis was proposed using more favorable conditions since an economic and environmental point of view, replacing dimethylformamide by 25, 50 and 75% acetone as substitute solvent. The physicochemical properties of the materials were evaluated by XRD, SEM, FTIR, XPS, MP-AES and N2 adsorption to understand its crystalline structure, morphology and porous structure. The progress of the reaction was followed by gas chromatography and mass spectroscopy. The MOF50% showed a 51.34% of selectivity to the desired products and 32 of the turn over number (TON) (moles of product/moles of Zr in the catalyst) by optimal conditions, minimizing catalyst mass and promoting a more economical and eco-friendly process.