RT journal article
T1 Selective Oxidation of Veratryl Alcohol over Au-Pd/Ce0.62Zr0.38O2 Catalysts Synthesized by Sol-Immobilization: Effect of Au:Pd Molar Ratio
A1 Olmos, Carol M.
A1 Chinchilla Reyes, Lidia Esther
A1 Villa, Alberto
A1 Delgado Jaén, Juan José
A1 Hungría Hernández, Ana Belén
A1 Blanco Montilla, Ginesa
A1 Calvino Gámez, José Juan
A1 Prati, Laura
A1 Chen, Xiaowei
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Veratryl alcohol oxidation
K1 lignin
K1 bimetallic Au-Pd catalyst
K1 ceria-zirconia
K1 Au:Pd molar ratio
AB The selective oxidation of veratryl alcohol (VA), a model compound of lignin, with oxygenmolecules to produce veratraldehyde (VAld) was studied over monometallic Au, Pd, and bimetallicAu:Pd nanoparticles supported on a Ce0.62Zr0.38O2 mixed oxide for the first time. These bimetallicAu-Pd catalysts with Au:Pd molar ratios from 0.4 to 4.3 were synthesized by the sol-immobilizationmethod. Furthermore, all the catalysts were characterized by inductively coupled plasma-atomicemission spectroscopy (ICP-AES), N2 physisorption, X-ray photoelectron spectroscopy (XPS),scanning transmission electron microscopy-high angle annular dark field (STEM-HAADF) imaging,energy dispersive X-ray spectroscopy (EDXS), and temperature programmed reduction (TPR)techniques. A synergistic effect between gold and palladium was observed over all the bimetalliccatalysts in a wide range of studied Au:Pd ratios. Remarkably, the optimum Au:Pd ratio for thisreaction was 1.4 with a turnover frequency of almost six times larger than for the monometallic goldand palladium catalysts. Selectivity to veratraldehyde was higher than 99% for the monometallic Au,Pd, and all the bimetallic Au-Pd catalysts, and stayed constant during the reaction time.
PB MDPI
SN 2079-4991
YR 2018
FD 2018-08
LK http://hdl.handle.net/10498/30003
UL http://hdl.handle.net/10498/30003
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026