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1、2017年第46卷第1期石油化工PETRoCHEMICALTECHNOLOGY·17·發(fā)D0l:10.3969/j.issn.1000-8144.2017.01.003介孔氧化鋁制備方法對其載體及催化劑性能的影響呂振輝,薛冬,彭紹忠,張學(xué)輝,高玉蘭,佟佳(中國石化撫順石油化工研究院,遼寧撫順113001)[摘要]分別采用醇鋁法和沉淀法制備氧化鋁,借助N:物理吸附一脫附、xRD和sEM等技術(shù)對試樣進行了表征,并對制備的載體進行對比。表征結(jié)果顯示,醇鋁法制備的擬薄水鋁石純度及結(jié)晶度更高,雜質(zhì)少;小孑L氧化
2、鋁孔徑分布峰集中且峰形尖銳,峰寬較窄;大孔氧化鋁孔徑分布峰更寬甚至消失;氧化鋁由粒徑均勻且完整度高的球形顆粒聚集而成;小孔氧化鋁載體孔徑分布集中,沒有大孔;而大孔氧化鋁載體除介孔外還含有許多大孔。將兩種方法制得的大孔氧化鋁載體制備成催化劑,以渣油和蠟油混合油為原料,在氫分壓15.5MPa、氫油體積比650:1、反應(yīng)溫度390℃、液態(tài)空速0.5h。1的條件下對催化劑進行評價。評價結(jié)果顯示,醇鋁法制備的催化劑具有較為優(yōu)異的加氫脫硫、加氫脫氮、加氫脫殘?zhí)考凹託涿摻饘倩钚浴關(guān)鍵詞]擬薄水鋁石;介孔氧化鋁載體
3、;沉淀法;醇鋁法;加氫催化劑[文章編號]1000一8144(2017)0l—0017一lO[中圖分類號]TQ050.4[文獻標(biāo)志碼]AInnuencesofpreparationmethodsofmesoporousaluIIlinaOnitsprope硝esandpe啪mancesofthecatalysts三磺勱繃^謝,助eDD餾,n餾砌口砌。餾,勱口,強砌e^“f,國D玩腸胛,而餾覷(SiIlopecFushllnRcsearchIIlstituteofPe仃oleum齟dPe們chemical
4、s,F(xiàn)ush嘶Liaoning11300l,China)[Abstract]Aluminasampleswerepreparedbyaluminiumalkoxidemethodandprecipitationmethodseparately,andcharacterizedbymeansofN3-TPD,XRDandSEM.Theresultsshowedthat,thepseudoboehmitesamplespreparedbythealuminiumalkoxidemethodhadhighp
5、urity,highcrystallini鑼andlowimp嘶夠content;Ⅱ1eporesizedis仃ibutionofal砌inawithmicroporewasn卸∞w;andtheporesizedistributionofmacroporousaluminawaswiderandeVendisappeared.Thepreparedaluminasamplesconsistedofsphericalpanicleswithunifomparticlesize.Theporesized
6、istributionofthea1啪inasupportswithmicroporeswasconcentratedwitlloutmacropores,a11dthereweremanymacroporesaIldmesoporesint11emacroporousaluInillasupports.Catalystswerepr印ared缸.omthemacroporoussupponspreparedbyt11etwomethods,andtheiractiVi夠wereeValuatedun
7、dertheconditionsofresidualoiIandwaxoilasrawmaterials,hydrogenpartialpressure15.5MPa,volumeratioofhydrogentooil650:1,reactiontemperature390℃andV01umespaceVelocity0.5h~.TheresultsshowedthatthecatalystpreparedbythealuminiumalkoXidemethodhadmuchhigheractivi
8、tyinhydrodesulfhrization,hydrodenitrogenation,hydrode—carbonresidueandHD(Ni+V).[Keywords]pseudoboehmite;mesoporousaluminasupport;precipitationmethod;aluminiumaIkoxideIrlemod;hydrogenationca.Calyst[收稿日期]2016—06—24;[修改稿日期]2016—10—l