Improving the selectivity to HDS in the HDT of synthetic FCC naphtha using sodium doped amorphous aluminosilicates as support of CoMo catalysts

Influence of Na content on behavior of NiMo catalysts supported on titania nanotubes in hydrodesulfurization

“…8, where a detrimental effect of increasing the sodium content in the support on the activity and hydrogenation ability of the NiMo/TNT(x) catalysts can be seen. In general, these results are in line with previous publications [48,[57][58][59][60], where the effect of the introduction of alkaline metals (Na + , K + ) on the catalytic behavior of different HDS catalysts (CoMo/Al 2 O 3 , NiW/MCM-41, CoMo/aluminosilicate) was studied. To clarify the effect of sodium addition on the behavior of the titania-supported NiMo catalysts, in the present work, commercial TiO 2 anatase (TiO 2 -NP) was used, which was modified with different amounts of Na (TiO 2 -NP(y) supports).…”

Applications of CoMo/calcined quaternary hydrotalcites for hydrotreatment reactions

“…Obtained results for CoMo/HT-0.20 and CoMo/HT-0.25 catalysts related to HDS/HDY selectivity are quite interesting because they were higher than those of CoMo/γ-alumina. The key is to meet the environmental regulations regarding sulfur content in gasoline while preserving the octane number [6,24,26,29].…”

“…During the fuel combustion, sulfur and nitrogen oxides are released to environment producing the acid rain, greenhouse effect, human respiratory diseases and other [6].…”

Advances of isomerizing-hydrogenating properties of CoMo catalysts supported on ASA-Al2O3

“…Amorphous aluminosilicates (ASA) are becoming widely used because of the presence of a certain set of acid sites that can catalyze various reactions, and also due to their relatively low cost. For example, it is shown in [13,[17][18][19] that ASA could promote isomerization and aromatization reaction. The use of ASA in hydrotreating catalysts allows the improvement of catalytic activity in hydrodesulfurization and hydrodenitrogenation reactions [20][21][22].…”

“…The increased ability of hydrotreating catalysts to isomerization reactions is a distinct advantage in a process such as catalytic cracking gasoline hydrotreatment. It was recently found that isomerization activity of aluminosilicate component to ole ns provides conversion of low-octane component to its highoctane derivative, as well as the reduction in contribution to hydrogenation reaction of ole n [17][18][19]. These effects make it possible to preserve the octane number of the product, which is one of the most important indicators for this type of catalyst.…”