AH型非贵金属松香歧化催化剂的研究

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1、分类号UDC密级．艮观理≥夫孝硕士学位论文AH型非贵金属松香歧化催化剂的研究研究生姓名至整竖指导教师姓名、职称至垩塑!整撞2学科专业廛旦垡茔研究方向论文工作起止日期论文提交日期昆明理工大学硕士学位论文AbstractDisproportionatedrosinisoneofthemostjmportantproductsofmodifiedrosin，havingwiderangeofapplication．Uptothepresent，Pb／Ccatalystisthebestcatalysttoproducedispropor￡iona

2、tedrosininindusty．However，thecontentofPalladiumintheearth’scrustisveryrare．Palladiumisveryexpensive，andmainlyacquiredbyimport．Unpreciousmetalcatalystusedinrosindisproportionatedreaction，hasbeenacommonconcerntopicoftheresearchers．Inthepaper，nano—technologyhasbeenappliedtoca

3、talyticpreparation，unpreciousmetalnanometercatalystwithhigheractivityusedinrosindisprOportionatedreactionhasbeendeveloped；thecraftworkandkineticsofrosindisproportionandthestructureandpropertyofthecatalysthavebeenresearched．Thewholeprocessisdividedinlofourpartswhichareasfol

4、lows：1)Theexaminationofcatalyticpreparationandproperty．Examinedthecatalytickinds，preparativemethodsandpreparativeconditions，itisfoundthatAHpreparedbysol—gel--precipitationmethodhashigheractivity．Itspreparativeconditionsareasfollows：ThewaterbathtemperatureisT1，thepHvalueisX

5、s，thebaketemperatureist3．andreductiontemperaturejsTc．2)Thediscussionofdisproportionatedrosin’spreparationandconclusi011．Byexaminingthepreparativecraftworkofdisproportionatedrosin，ithasbeenfoundthebestpreparativeconditions：reactivetemperatureis270℃．reactivetimeis3hourandthe

6、eontentofcatalystis2．5％．31InvestigationwereundertakenontheintrinsickineticsofcatalyticdisproportionationofrosinonAHat240～270℃．Ithasbeenfoundthatthereactionofrosindisproportionationisallfirstorderreaction，theactivationenergyE=184．80kJ．mol～．pre．exponentialfactorA=1．453×10”mi

7、n一．4)CatalyticphysicalpropertieshasbeencharacterizedbyBET．Resultssuggestthat：a)Whenactivitycomponentsaresame，catalystactivityandspecificsurfaceareabecomesthedirectproportion．Thespecificsurfaceareaismorebig，thecatalystactivityismorehigh；b)Whenthespecificsurfaceareaissame，th

8、eactivitycomponentdistributestheoutwardsuefacejnbottomthing，thecatalystactivityishigh．Key