III International Conference

PP-II-141and 410 o C; pressure of 3.5 MPa; a feed space velocity of 2.5 h -1 ; a hydrogen : feedstock ratioof 450 Nl/l.For initial fraction and obtained hydrogenates contents of sulfur and polycyclic aromaticcompounds (PCAC) was determined, it have allowed to determine HDS and hydrogenationactivity of catalysts.As a result of the done work application of H 4 [Si(Mo 12 O 40 )]*nH 2 O,H 3 [P(Mo 12 O 40 )]*nH 2 O, H 3 [P(VMo 11 O 40 )]*nH 2 O instead of PMA at synthesis of Al-Ni-Mocatalysts increases HDS degree and hydrogenation activity was shown. As an example infigure diagrams of dependence of HDS degree from temperature of process for catalysts onthe basis of PMA (№ 1), H 4 [Si(Mo 12 O 40 )]*nH 2 O (№ 2), H 3 [P(Mo 12 O 40 )]*nH 2 O (№ 3),H 3 [P(VMo 11 O 40 )]*nH 2 O(№ 4) are given.Fig. HDS activity of Al-Ni-Mohydrotreating catalystsAdditives of tungsten increase HDS and hydrogenation activity of catalysts. Replacementof PTA on H 4 [Si(W 12 O 40 )]*nH 2 O and H 3 [P(W 12 O 40 )]*nH 2 O raises HDS activity of catalystsin all the investigated interval of temperatures. Influence of a nature of tungsten compoundson hydrogenation activity is more complicated. Additives of tungsten in all cases raiseactivity also, but PTA shows the best results, than H 4 [Si(W 12 O 40 )]*nH 2 O, andH 3 [P(W 12 O 40 )]*nH 2 O shows very high activity only in the field of low temperatures.Thus, the use of HPCs for synthesis of Al-Ni-Mo hydrotreating catalysts allows toincrease their HDS degree and hydrogenation activity in relation to PCAC diesel fraction.References1. N.N. Tomina. Dissertation of Cand.Tech.Sci. Ufa: The Ufa Petroleum Institute. 1990.422