催化精馏专用填料型固体酸催化剂的制备研究

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1、天津大学博士学位论文催化精馏专用填料型固体酸催化剂的制备研究姓名：杜长海申请学位级别：博士专业：工业催化指导教师：秦永宁;贺岩峰20040301摘要ABSTRACTCatalyticdistillationisanewtechnologythatcombinesreactionanddistillationinasinglecolumn.However,uptonow,mostofpublicationsfocusedmainlyontheapplicationsofcatalyticdistillation,andtherehavealittl

2、epublicationsfocusedonthecatalystforcatalyticdistillation.TheaimofthispaperistodevelopanovelstructuredsolidacidcatalystpackingforcatalyticdistillationThestructuredA1203-AIcarrierwaspreparedbyanodicoxidationofhigh-purityaluminiumfoils,theanodicfilmthickness、theporesizedistribu

3、tionandthespecificsurfaceareaweremainlyaffectedbyanodicconditions,theXRDresultsshowedthatthesupportanodizedA1203layerisamorphousoxidesupporting.AnovelstructuresolidacidS042-/A1203-AlcatalystforcatalyticdistillationwaspreparedbyimpregnationofanodizedaluminiumplateswithaqueousH

4、2SO4,andcharacterizedbyXPS,BET,XRD,NH3-TPD.XRDpatternsofsamplesshowedthatthesupportanodizedA1203layerisamorphousoxidesupporting.NH3-TPDresultsshowedthatthecatalysthadintermediateacidsites.Thecatalystwasactivefortheesterificationofaceticacidwithethanol,andhadgoodstability.Anov

5、elstructuredsolidacid5042"/Zr02-Al203-A1catalystforcatalyticdistillationwaspreparedbysupporting5042-/Zr02ontothestructuredA1203-Alcarrierpreparedbyanodicoxidationofhigh-purityaluminiumfoils,andthesampleswerecharacterizedbyXRD,BET,XPS,NH3-TPDmethods.TheresultsshowedthattheS042

6、-/Zr02-A1203-A1catalysthadintermediateacidsites.TheXRDresultsshowedthatZr02wasutterlydispersedonA1203-Al.ThecatalyticactivitiesofSO42一/Zr02-A1203-AIcatalystfortheesterificationofaceticacidwithethanolwerehigherthanthatofS042'/A1203-Alcatalyst.Thecatalyticdistillationforthesynt

7、hesisofethylacetatewas摘要conductedexperimentallyinapilotplantwithS042-/A1203-Aland5042-/Zr02-A1203-Alcatalystrespectively,theresultsshowedthatthecatalystshadgoodcatalyticactivitiesintheprocessofcatalyticdistillation.ThePressuredropandthemasstransferefficiencyoftheS0427A1203-Al

8、andtheS042-/Zr02-A1203-A1catalystswereexamined.Itsresultsshowedthatt