n2o氧化苯制苯酚fezsm5催化剂成型及宏观性能研究

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1、北京化工大学硕士学位论文果表明：(1)选取适宜的反应温度对氧化过程非常重要，超过或低于一定的温度均会影响催化剂性能的发挥；(2)空速的改变会对反应过程中催化剂床层温度带来严重的影响，同时也影响催化活性；(3)进料配比存在适宜值，苯酚收率随进料配比的增加先增加后下降。最终确定的、实验所用催化剂的相对适宜操作条件范围为：反应温度425．450℃、空速4500h-l_5500h～、原料配比8：1．10：1。关键词：N20，苯酚，Fe．ZSM．5分子筛，成型，温升，工艺条件万方数据ABSTRACTResearc

2、honextrusionconditionsandmacroperformanceoftheFe··ZSM-·5catalystforN20oxidationbenzenetophenolABSTRACTN20onestepoxidationbenzenetophenolasanewwayintheprocessofphenolhasbeenthefocusofmodemresearchers．Inthispaper,wetaketheN20onestepoxidationofbenzenetophen

3、olastheobject，bymeansofthecombinationofcharacterizationanalysisandexperimentalevaluation．StudyontheeffectsofmoldingconditionsontheformingprocessofFe·-ZSM-·5molecularsieveandthemacroscopicpropertiesofthecatalyst．DeterminethesuitabilityofFe—ZSM一5moldingand

4、applicationconditions．Regardthestrengthofcatalystanditsactivityastheindex．TheinfluenceofSBpowder,nitricacid，water／powderratioandexpandingagentwereinvestigatedbysinglefactormethod．Theresultsshows：(1)SBpowder,nitricacid，water／powderratioandexpandingagental

5、lhaveagreatinfluenceonthestrengthofmoldingcatalyst．TheincreaseofthecontentofSBpowderwillleadtotheincreaseofthestrengthofthecatalyst．TheadditionofnitricacidandwaterhavetheOptimumvalue．Expandingagentcanmakethecatalyststrengthdecrease．(2)AddingSBpowder,nitr

6、icacidhasacertaineffectonthecatalyticactivityofthereaction，andtheaddingofthewateralmosthaveno万方数据北京化工大学硕士学位论文effectonactivity．(3)Addingporeexpandingagentbringstheincreasingofactivityandlifeofcatalyst．Whentheadditionamountwas10％，thehighestyieldofphenolrea

7、ched77．8％．ThesuitablemoldingconditionsforFe-ZSM一5molecularsievecatalystsare：powderFe-ZSM一5209，SBpowder20％一25％，HN036％-8％andwaterpowderratio70％．RegardtheyieldofphenolandtheconversionrateofN20asthetarget．Adoptthewayofcombiningwithsinglefactorexperimentandor

8、thogonalexperiment．Exploretheeffectsofreactiontemperature，Spacevelocityandtheratioofrawmaterialsonthereaction．theresultsshows：(1)Theselectionofreactiontemperaturewillseriouslyaffectthereaction，thetemperatureistoohighortool