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ID:34828659
大小:2.47 MB
页数:108页
时间:2019-03-12
《苯与乙烯烷基化反应中的抗s催化剂的研制》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、北京服装学院硕士学位论文苯与乙烯烷基化反应中的抗S催化剂的研制姓名:江炜申请学位级别:硕士专业:化学工程指导教师:傅吉全2001.1.1北京月垦茎兰堕堡主塑垄圭笙查——摘要本文分别研究了单纯S化物和在实际反应体系(菱塑至燧堡重耋塾反应制乙苯)中的S化物在FxJ02催化剂上的吸附清况。使用单元金属离子和多元金属离子交换对B一三叶草型催化剂进行改l生,并通过活
2、生评价(含S和不含S)、TPD等实验手段对改性催化剂进行初选,再对有希望的催化剂进行加速失活寿命实验(含S和不含S),进一步进行筛选,最终获得一种相对FX-02催化齐师言,其它
3、性能指标方面基本相当,但稳定性更加优异,且具有一定抗S能力的新型催化剂。同时鉴于多元金属离子交换改陛催化剂所表现出来的优良陛能,使用TPD、IR、XRD、孔结构测试等催化剂表征手段对该系列改性催化匍隧行了较深入的研究。糊:B沸毒乙苯;抗s;金属离子交一催化剂改性√北京服装学院硕士研究生论文StudyonModificationofZeofite13CatalystforAnti-SulfurinAlkalationofBenzenewithEthyleneJiangWei(Chemical&Engineering)Directed
4、byProfessorFuJiQuanABSIRACTInthel髑parationofethylbenzenefromthealkylationofbenzenewithFCCoff-gas,TheactivityofFX-02(zeoliteBcatalyst)isSOsensitivetothesulfidethatiftheamountofsulfideinFCCoff-gasiSmore1ittlethantheloweststandard,FX-02willbedeactivatedquicNy.Therefore,i
5、tisnecessaryformtodevelopanewkindofcatalyst,whichownstheabilitytoresistsulfidetosomeextent.SeveralimportantfoundationalresearchproblemsandvaluableapplicationprocessaboutmodificationofzeoliteBcatalystwerestudiedanddeveloped.nleadsorptionofdifferentsulfideontheFX-02cata
6、lysthasbeenstudiedbYmeansofTPD,/R,fi'omwhichitisfoundthattemperatureplaysanimportantroleforsulfide’Sadsorb.mgonFX-02catalyst.Asforethanethiol,theadsorbingruleisconformtotheclassicaladsorptiontheory,SOisthiopheneincomparativelylowcentigradedegree,butwiththeadsorptionte
7、mperature’Srisingupto350℃,theclassicaladsorptiontheoryisbrokenbecauseofdiffusionin9zeoliteandtheholestructureofcatalyst.Inaddition,alterthiopheneisadsorbedOilFX.02catalyst,somechemicalreactionmustbehappened,butthemechanismofreacfionhasnotbeenclearedyet.111edeactivated
8、catalystandregeneratedcatalystwerecharacterizedbychemicaladsorptionofpyfidine(or2,6-dimethylpyridine)andtemperature-北京服装学院硕士研究生论文————————————————————————————————————————————————————————————————一一programmeddesorption(TeD),RX-raydiffraction∞㈣,Gc-MS锄dholestructuretest.田∽
9、resultshowsthatsulfideadsorbingonFX-02catalystisnottightanditaffectsmedialacidsitesmoreapparentlythanweakandstrongacidsites.
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