III International Conference

PP-I-77THE EFFECT OF MODIFICATION ON PHYSICO-CHEMICAL PROPERTIES OFHYDROTREATMENT CATALYSTS SUPPORTSReznichenko I.D., Aliev R.R., Posohova O.M., Tseljutina M.I.“Angarsk Catalysts and Organic Synthesis Plant. Co-Ltd.”, Angarsk , Irkutsk region, RussiaE-mail: of34@anhk.yukos.ruThe effect of modification with boron and phosphorus compounds on the properties ofhydrotreatment catalysts supports has been studied. The modification with phosphorus hasbeen shown to be more efficient compared to that with boron.It is known, that one of the major elements of hydrotreatment catalysts technology is thesynthesis of the support as which activated aluminum oxide (АAO) is used most frequently.Now there is a commonly accepted concept that each raw material to be processed requirescertain pore size of the catalysts support. For this reason, the studies on the structural andtextural characteristics of activated aluminum oxide (АAО) as well as procedures for thepreparation and modification of supports with given properties are rather actual. The «AC andOSP Co.Ltd.» has implemented an import industrial line for producing aluminum oxidesupports with given properties for various catalysts. The implemented technology enables oneto produce aluminum oxide with various characteristics.Results of studies on the optimization of support structure depending on the assignmentof process and quality of raw materials were used for the development of producingtechnology of hydrotreatment catalysts with use of phosphorus and boron compounds asmodifiers. During that the technology has been developed and the manufacturing has beenimplemented for producing hydrotreatment catalysts for diesel fractions to give low sulfurdiesel fuel; for hydrotreatment of vacuum gasoil, the material for catalysts cracking; forhydroreforming vacuum distillates to produce oily fractions with cold resistance properties;for hydrogenation of unsaturated hydrocarbons and sulfuric compounds to benzene-toluenefractions.It has been established that the greatest changes in size of support crystallites theirtextural and acidic characteristics might the reached by modifying with phosphorus, combinedmodifying with phosphorus and boron or incorporating wide-porous zeolites into thecomposition of the support (AAO). The use of such modified catalysts supports has allowedto improve the efficiency of hydrotreatment process as known industrial ones.145