| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to production of hydrofining catalysts. Described is a catalyst for hydrofining heavy petroleum cuts which contain active components: [Si(WO3)12] in amount of 1.0-9.0 wt %; [P-(WO3)12] in amount of 1.0-9.0 wt %; [Si-(MoO3)12] in amount of 4.0-22.0 wt %; [P-(MoO3)12] in amount of 6.0-22.0 wt %; active component promoter - nickel oxide NiO, in amount of 3.0-8.0 wt %; carrier modifier - V2O5 in amount of 0.5-5.0 wt % and SnO2 in amount of 0.1-4.0 wt %; aluminium oxide Al2O3 in amount of 84.4-21.0 wt %. Described also is a method of preparing said catalyst, involving saturation of the carrier with a solution of a molybdenum or nickel compound, involving synthesis and saturation of the modified carrier: V2O5, SnCl45H2O, H4[Si(W12O40)]10H2O, H4[P(W12O40)]10H2O is added to aluminium hydroxide peptised with a monobasic acid; the mixture of starting compounds is evaporated to residual moisture of 60-70%, moulded in form of extruded articles, dried and calcined, with the final calcination temperature of the carrier equal to 550C; the calcined extruded articles then undergo one-time saturation with an impregnating solution which contains heteropoly-compounds of molybdenum H4[Si(Mo12O40)]21H2O, H4[P(Mo12O40)]14H2O and nickel nitrate Ni(NO3)26H2O, with pH of the medium equal to 3.0-5.5, followed by thermal treatment of the ready catalyst. ^ EFFECT: catalyst characterised by high activity when hydrofining heavy petroleum cuts is obtained. ^ 5 cl, 3 tbl, 7 ex |
