A study of the hydrodeoxygenation of anisole over Re-MoOx/TiO2 catalyst

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al 2 O 3 catalyst: Reaction network development and kinetic study of anisole upgrading

“…16) is one of the detailed and quantitative reaction networks, which is broadly consistent with previous investigation. 16,19,21,28,41,[43][44][45] As shown in Figure 16, phenol is produced from HDO of anisole with the production of methane as the primary product with the highest selectivity among different products. 2-Methylanisole and 2-methylphenol are produced via alkylation reaction of anisole as primary products.…”

“…17,18 F I G U R E 1 Schematic diagram of the operating reactor system [Colour figure can be viewed at wileyonlinelibrary.com] It has been confirmed that the HDO process is enhanced in the presence of an active site for hydrogen activation (leading to hydrogenation and HDO) and an acidic site on support for better C aromatic O cleavage, in addition to catalyzing intermediate reactions such as dehydration, hydrogenolysis, isomerization and hydrocracking reactions. 19 The extent of these complex catalytic reactions depends on the catalysts and support employed. Therefore, selection of an appropriate catalyst is limited based on the desired product distribution.…”

“…[21][22][23] It has been confirmed that the HDO process is enhanced in the presence of an active site for hydrogen activation (leading to hydrogenation and HDO) and an acidic site on support for better C aromatic O cleavage and in addition to catalyzing intermediate reactions such as dehydration, hydrogenolysis, isomerization, and hydrocracking reactions. 19 Noble metals such as Pd, Pt, Rh, and Ru promote saturation of aromatic compounds, resulting in cycloalkanes and alkanes formation. 21 Moreover, due to the high hydrogen activation of noble metals, they yield the highest oxygen removal among other active phases.…”

Proceso de hidrodesoxigenación de anisol sobre catalizadores de Ni-Ru soportado en TiO2

“…Ghampson et al [46] evaluaron la influencia de la temperatura (250-325 °C) en la HDO de anisol a partir de catalizadores Re-MoOx/TiO a 0.232 mol•L -1 y 50 bar. Los resultados encontrados mostraron que a 250 °C la conversión obtenida de anisol fue apenas del 20%, siendo el benceno y fenol los principales productos.…”

“…Un factor importante que se debe tomar en cuenta al momento de operar un reactor por lotes, es el cambio en la concentración inicial. Ghampson et al [46] estudiaron la variación de la concentración de anisol entre 0.18-0.38 mol•L −1 en la HDO de anisol utilizando catalizadores de Re-MoOx soportados en TiO2 a 300 °C y 50 bar en un reactor por lotes. Determinaron que el benceno fue el producto principal a concentraciones iniciales de 0.182-0.282 mol•L −1 , mientras que el fenol fue dominante a concentraciones mayores de 0.332-0.38 mol•L −1 .…”