@misc{10498/30003,
year = {2018},
month = {8},
url = {http://hdl.handle.net/10498/30003},
abstract = {The selective oxidation of veratryl alcohol (VA), a model compound of lignin, with oxygen
molecules to produce veratraldehyde (VAld) was studied over monometallic Au, Pd, and bimetallic
Au:Pd nanoparticles supported on a Ce0.62Zr0.38O2 mixed oxide for the first time. These bimetallic
Au-Pd catalysts with Au:Pd molar ratios from 0.4 to 4.3 were synthesized by the sol-immobilization
method. Furthermore, all the catalysts were characterized by inductively coupled plasma-atomic
emission 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 bimetallic
catalysts in a wide range of studied Au:Pd ratios. Remarkably, the optimum Au:Pd ratio for this
reaction was 1.4 with a turnover frequency of almost six times larger than for the monometallic gold
and 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.},
publisher = {MDPI},
keywords = {Veratryl alcohol oxidation},
keywords = {lignin},
keywords = {bimetallic Au-Pd catalyst},
keywords = {ceria-zirconia},
keywords = {Au:Pd molar ratio},
title = {Selective Oxidation of Veratryl Alcohol over Au-Pd/Ce0.62Zr0.38O2 Catalysts Synthesized by Sol-Immobilization: Effect of Au:Pd Molar Ratio},
doi = {10.3390/NANO8090669},
author = {Olmos, Carol M. and Chinchilla Reyes, Lidia Esther and Villa, Alberto and Delgado Jaén, Juan José and Hungría Hernández, Ana Belén and Blanco Montilla, Ginesa and Calvino Gámez, José Juan and Prati, Laura and Chen, Xiaowei},
}