貴金屬芳烴加氫催化劑的制備及應(yīng)用研究

1、存懸⑧天津大摹中國(guó)近代第一所大學(xué)碩士學(xué)位論文_n■睡U■0爿|強(qiáng)哪■■P__學(xué)科專業(yè)：化塋工藝作者姓名：王建偉指導(dǎo)教師：鲞焦遺塾攫工擊上g‘【Ⅱ日9^■m≥2005年12月ABSTRACTRecentlyaromaticsaturationindistillatefractionshasreceivedconsiderableattentionAhigharomaticcontentisassociatedwithpoorfuelqua

2、litygivingalowoctanenumberindieselfuelandahighsmokepointinjetfuel，andotherenvironmentalproblemsNewlegislationhasbeenintroducedinmanycountriestolimitaromaticcontentindieselfuelAndthishasledtonewcatalystandprocessdevelopme

3、ntsforaromaticsaturationNowtherealetwomajorkindofcatalystinresearching：supportedmetalsulfidecatalystandsupportednoblemetalcatalyst，andtheprocessincorrespondencearesingle—andtwo—stage，respectivelyThelatteroneissuperiortot

4、heformerinthedepthofaromaticsaturation，butitissensitivetoSandNcontainingcompoundsinfeedstock，thus，itisimportanttoimprovethesulfurtoleranceofthiscatalystOtherspapershadbeenstudiedcarefullyInotherswork，lotsofkindsofsolidac

5、idusedasthecarriersofnoblemetalaromatichydrogenationcatalystshadbeencarnparedAndacommonconclusionhadbeenmadethat，forzeolitecarriers，ytypezeolite，especiallytheultrastableYtypezeolites，andfornonzeolitecarriers，theamorphous

6、silicaaluminashowedbetteractivityandsulfurtoleranceInthiswork，twokindsofcommercialultrastableYtypezeolites(usYSSY)，andakindofamorphoussilicaalumina(ASA)hadbeenintroducedasthecarriersofnoblemetalcatalystsBycomparison，Pd／S

7、SYcatalystismuchbetterthantheothertwoinhydrogenationactivityandsulfurtoleranceAndthepreparationconditionhasbeenoptimized，thatis：porevolumeimpregnationPdcontent2wt％，calcinedat500。C，reducedat450。CUndertheanalysisofthehydro

8、genationproductsbyGCMS，thetoluenehydrogenationnetworkhasbeenputforwardTherearethreekindsofreactionoftoluenehaveoccurredonthesurfaceofnoblemetalcatalysts，thatis，hydrogenation，disproportionationandisomerization，Onthe敘ed—be

9、dreactor，thetechnologicalconditionsofmodelfeedstockdydrotreatinghavebeenoptimized，thatis，reactiontempretureis220。C，reactionpressureiS42MPaLHSVis27h～、andtheH2／feedstockvolumeratiois500L／LUnderthisconditionwhensulfurconten