Deep hydrodenitrification of pyridine by solid catalyst coupling with ionic liquids under mild conditions

Abstract

A new route for deep hydrodenitrification (HDN) by solid catalyst coupling with ionic liquids (ILs) under mild conditions was proposed.

Ionic liquids assisted desulfurization and denitrogenation of fuels

“…Although the common HDN process is expensive and requires harsh conditions, the HDN supported with ILs requires milder conditions. [211] Yao and co authors [234] Moreover, the catalytic system can be recycled 3 times with negligible loss of efficiency. There are some researches on HDN supported with ILs because of harsh conditions and economically unprofitable process (expencive H2) in comparison with EDN.…”

Enhanced Photocatalytic Fuel Denitrification over TiO2/α-Fe2O3 Nanocomposites under Visible Light Irradiation

“…Once released into the atmospheric environment, their combustion products (e.g., NO 2 , NO and unburned hydrocarbon particles) will cause photochemical smog and resulting in serious hazardous effects on ecosystems and human health 1 , 2 . The removal of nitrogen containing compounds from gasoline is currently achieved by catalytic hydrodenitrification, adsorptive denitrogenation, oxidative denitrogenation, and photocatalytic denitrogenation 3 – 8 . Among the above methods, photocatalytic is a promising technique since it achieves the one-pot removal of NCCs by utilizing sunlight 7 , 8 .…”

Hydrodesulfurization of dibenzothiophene using Pd-promoted Co–Mo/Al2O3and Ni–Mo/Al2O3catalysts coupled with ionic liquids at ambient operating conditions

“…In this scenario, the solubility of H 2 in the liquid phase is the major activity-controlling factor. 51 The DFT results in Fig. 8 show the much higher solubility of H 2 in all of the four ILs than in the DBT model oil, which is conducive to better H 2 transport through the reaction mixture in the presence of IL, allowing the H 2 to reach and then be activated on the surface of the Pd-Ni-Mo/Al 2 O 3 , ultimately performing the HDS reaction.…”

“…Furthermore, the BE between H 2 and ILs in Table 4 were much smaller than those between H 2 and n-octane, con-rming the higher solubility of H 2 in IL than in n-octane. This can facilitate easier mass transfer of H 2 through the IL and hence better chances of activated H atom generation 51 which can, in turn, enhance the HDS activity. Better H 2 solubility in ILs is envisaged in Fig.…”