Anisole Hydrodeoxygenation: A Comparative Study of Ni/TiO2-ZrO2 and Commercial TiO2 Supported Ni and NiRu Catalysts

GuaiacolHDOon La‐modified Pt/Al2O3: Influence of rare‐earth loading

“…In full agreement, Tavizón‐Pozos et al [ 62 ] reported production of so‐called ‘oxygenated intermediaries’, although no specific species were disclosed in that case. Interestingly, cyclohexene was also identified by those authors, with that being attributed to dehydration (from cyclohexanol [ 63,64 ] or cyclohexanone [ 64 ] ) on Brønsted acid sites provided by the equimolar alumina–titania carrier used. No hydrocarbon species due to solvent ( n ‐decane) disintegration were observed during our catalytic runs.…”

“…Anisole (not observed, presumably due to very rapid transformation [64] ) could produce BEN (that in turn could be transformed to CHA) through direct HDO (MeOH by-product [64] ) or methylcyclohexyl ether (MCE) through aromatic ring hydrogenation over Pt that could be favoured by the used operating conditions (moderate temperature and high pressure). [63] On the other hand, MCE could be transformed through demethylation to cyclohexanol, which is converted by dehydration to cyclohexene that could be in turn saturated to CHA. [63] Due to their very close boiling points and considering that we used a non-polar column during GC analysis (see Section 2.3), BEN and CHA could not be reliably separated.…”

“…[63] On the other hand, MCE could be transformed through demethylation to cyclohexanol, which is converted by dehydration to cyclohexene that could be in turn saturated to CHA. [63] Due to their very close boiling points and considering that we used a non-polar column during GC analysis (see Section 2.3), BEN and CHA could not be reliably separated. Thus, they were lumped together, as those species constituted our targeted products.…”

Aqueous phase hydrogenation of furfural on Ni/TiO2 catalysts: nature of the support phase steers the product selectivity

“…Isopropanol is known for hydrogen donor ability. 44,45 But under the given reaction conditions, in the presence of isopropanol, FAL conversion is suppressed to 40.6% vis-à-vis 74.5% in water medium. FOL is selectively formed (87.5%) in water (Fig.…”

Metal–support interactions for heterogeneous catalysis: mechanisms, characterization techniques and applications

“…Furthermore, it was concluded by Rios-Escobedo et al that TiO 2 or TiO 2 –ZrO 2 is an essential carrier in anisole hydrodeoxygenation (HDO). 41 Depending on the carrier surface acidity, the oxygen defects dispersed on the surface and metal phases dispersed on the surface of the SMSIs, and these differences lead to a change in the product distribution and high performance on the catalyst. However, SMSIs were observed for the reconstructed Cu when sputtered on flame-produced LaTiO 2 but not for Cu NP loaded on commercial TiO 2 at 500 °C.…”