A Study of the Reactions of Ethanol on CeO2 and Pd/CeO2 by Steady State Reactions, Temperature Programmed Desorption, and In Situ FT-IR

Intrinsic Activity of MnOx-CeO2 Catalysts in Ethanol Oxidation

“…The fact, though, that the profiles of 12 C and 13 C-containing molecules are similar implies that these adsorbed species contain (at least) one C-C bond whose breaking is rate determining. catalysts in the form of one or more overlapping peaks below 200 °C has also been observed by other investigators [11,12,26]. At the same temperature region (below 200 °C), acetaldehyde desorption was observed.…”

“…Molecular ethanol ( 12 CH 3 13 CH 2 OH) was desorbed in the form of two or three overlapping peaks at temperatures below 200 • C. Desorption of ethanol from CeO 2 or M/CeO 2 catalysts in the form of one or more overlapping peaks below 200 • C has also been observed by other investigators [11,12,26]. At the same temperature region (below 200 • C), acetaldehyde desorption was observed.…”

“…The interaction of ethanol with ceria-based catalysts including ceria-supported metals (Pd, Pt, Rh, and Co) has been studied with dynamic techniques, such as temperature-programmed desorption (TPD), by several investigators [10][11][12][13]. It has been generally observed that a part of ethanol reversibly adsorbs and desorbs at low temperatures, while the remaining part undergoes surface transformation to other surface species.…”

Ambient pressure XPS and IRRAS investigation of ethanol steam reforming on Ni–CeO2(111) catalysts: an in situ study of C–C and O–H bond scission

“…The oxygen species from multiple layers of CeO2 (111) for bidentate ν(CO) or ρ(CH3), whereas the CH stretching bands are found at 2960 cm-1 and 2925 cm -1 for νas(CH3) and νas(CH2), respectively. 46 Moreover, the peaks at 1444 and 1380 cm -1 are assigned to the bending mode of δ(CH2) and δ(CH3). After adding water (D2O), significant changes were observed compared to the surface with pure ethanol.…”

Ceria‐Based Solid Catalysts for Organic Chemistry

“…The H 2 -reduction of the oxide surface inhibited the b-aldolization route owing to a considerable decrease of the Lewis-base sites, oxygen anions. [148] A catalyst of ruthenium combined with cobalt hydroxide and cerium oxide (Ru-Co(OH) 2 -CeO 2 ) exhibited a high activity for the oxidation of various alcohols in liquid phase with benzotrifluoride as solvent, in the presence of dioxygen. Allylic, benzylic, and secondary alcohols gave high yields of the corresponding carbonyl compounds.…”