Vapor-Phase Synthesis of Symmetric Ketone from Alcohol over CeO2-Fe2O3 Catalysts

Abstract

Formation of 3-pentanone via oxidative dimerization of l-propanol was investigated over CeO2-based solid solution with various metal oxides. An addition of Fe2O3 into CeO2 greatly enhanced the 3-pentanone formation, and both l-propanol conversion and 3-pentanone selectivity were maximized at Fe content of 20 mol%. It was found that the CeO2-Fe2O3 effectively works as a catalyst for the formation of symmetric ketones such as 3-pentanone, 4-heptanone, 5-nonanone, etc.

Ketonization of carboxylic acids over CeO2-based composite oxides

“…There is no correlation between specific surface area and conversion or selectivity. In our previous papers [33,35], we reported that CeO 2 -Fe 2 O 3 was an effective catalyst for ketone formation from 1-propanol. Here, we investigated the ketonization of propanoic acid over CeO 2 -Fe 2 O 3 ( Fig.…”

“…Alcohols, aldehydes, and esters are also converted into ketones through dimerization in the presence of CeO 2 and ZrO 2 [5,[31][32][33][34][35][36][37]. In our previous study [35], 1-propanol, propanal and propyl propanoate were converted into 3-pentanone in the presence of CeO 2 -Fe 2 O 3 catalysts.…”

Surface structure of yttrium-modified ceria catalysts and reaction pathways from ethanol to propene

“…Depletion in fossil fuel and increased concerns on the environment stimulate replacing petroleum with renewable resources. Several researchers including us have suggested that bioethanol is a promising renewable platform chemical to yield various C3 and C4 compounds [2][3][4][5][6][7][8][9][10][11][12][13]. The present study was thus devoted to the conversion of ethanol to propene.…”

Transformación de biomasa a productos químicos de interés y carburantes mediante descarboxilación cetónica e hidrodesoxigenación

“…[96][97][98] Alcoholes lineales como el etanol, 1-propanol, 1-butanol, 1-pentanol o 1hexanol se transforman a acetona, 3-pentanona, 4-heptanona, 5-nonanona y 6undecanona respectivamente sobre catalizadores de MgO, CeO2-MgO, CeO2-Fe2O3 y óxido de Sn-Ce-Rh. [92,[99][100][101] Alcoholes ramificados como el 2-metilpropanol o alcoholes aromáticos como el 2-fenil-1-etanol también reaccionan en presencia de CeO2-Fe2O3, MgO y CeO2-MgO. [93,100] Por otro lado, se ha demostrado que alcoholes secundarios como el 2propanol o el 2-metil-2propanol no se combinan formando cetonas sobre CeO2-MgO.…”

“…[92,[99][100][101] Alcoholes ramificados como el 2-metilpropanol o alcoholes aromáticos como el 2-fenil-1-etanol también reaccionan en presencia de CeO2-Fe2O3, MgO y CeO2-MgO. [93,100] Por otro lado, se ha demostrado que alcoholes secundarios como el 2propanol o el 2-metil-2propanol no se combinan formando cetonas sobre CeO2-MgO. [93] También se ha reportado la autocondensación de dioles de alcoholes primarios como el 1,6-hexanodiol a ciclopentanona sobre varios óxidos mixtos a base de CeO2.…”