Furfural hydrodeoxygenation on iron and platinum catalysts

ZANUTTINI, M. SOLEDAD; QUERINI, CARLOS; GROSS, MARTIN; MARCHETTI, GUSTAVO

APPLIED CATALYSIS A-GENERAL

ELSEVIER SCIENCE BV

Año: 2019 vol. 587

0926-860X

Furfural can be converted into a wide range of high-octane products like 2-methylfuran (2-MF) through hy-drodeoxygenation (HDO). Iron-based catalyst (Fe/SiO2), has shown high selectivity for gas phase conversion offurfural to 2-MF at atmospheric pressure and 573 K. However, it showed rapid deactivation. Furfural is the maincoke precursor, although coke is also formed when 2-MF and furan are used as reactants, but in lower quantities.Coke profiles along the catalytic bed suggest that tetra-hydrofuran is an important coke precursor. The additionof a second metal like platinum, even in very low proportions, generates hydrogen spillover leading to animportant improvement in the stability of the catalyst. The Fe/Pt ratio on the surface regulates the amount ofcoke deposited because it modifies the iron particle sizes, the interaction with the support and the amount ofhydrogen available for the reactions. These phenomena influence the reaction, coke formation and regenerationmechanisms.