Bimetallic platinum/iridium modified mesoporous catalysts applied in the hydrogenation of HMF

BRENDA C. LEDESMA; JUÁREZ, JULIANA M.; ANDREA BELTRAMONE

Congreso; XXVIII International Materials Research Congress; 2019

The catalytic transformation of 5-hydroxymethylfurfural (HMF) to produce 2,5-dimethylfuran (DMF)was studied over bimetallic (PtIr) and monometallic (Pt) catalysts supported on CMK-3 and SBA-15mesoporous materials. The optimum temperature and pressure for the maximum production of DMFwere 120° and 15 atm. Increases in temperature and pressure decreased the selectivity to DMF. Thecatalysts were broadly characterized by XRD, N2-isotherms, XPS, TPR, TEM and NH3-TPD. It was foundthat the metal particles were well reduced and highly dispersed on the surface of the support oflarge surface area and narrow pore distribution. The PtIr alloy species active sites were very activeand selective towards the formation of the desired DMF. PtIr-CMK-3 showed an excellent activity,selectivity and stability to be applied in this process.