CuZrO2催化剂上合成气制低碳混合醇的研究

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1、太原理工大学硕士学位论文Cu/ZrO<,2>催化剂上合成气制低碳混合醇的研究姓名：白永格申请学位级别：硕士专业：化学工艺指导教师：黄伟;贺德华20070501太原理T大学硕t研究生学位论文空产率为3．1啦g·h。论文同时考察了不同含量的Mn助剂对Cu／Zr02催化剂的改性作用，通过BET、XRD等手段研究了Mn对催化剂表面性质及晶相结构的影响，同时考察了催化剂的反应性能。结果表明，一定含量Mn的加入能够促进Zr02及CuO的分散，提高含氧化合物的选择性及时空产率，提高乙醇及异丁醇在含氧化合物中的分

2、布，Mn／Zr比为l时，在相同的反应条件下，含氧化合物的总时空产率达264．2g依g·h，异丁醇的时空产率为8．8e,mg·h。关键词氧化铜，氧化锆，低碳混合醇，CO加氢Ⅱ太原理T大学硕{：研究生学位论文STUDIESoNSYNTHESISOFMIXEDHIGHERALCOHOLSOVERCu／Zr02CATALYSTSABSTRACTThesynthesisofhigheralcoholsfromCOhydrogenationisoneoftheimportantroutesforeffecti

3、velyutilizingcoalresource．Thehigheralcoholsareexcellentfuels，andtheycanalsobeusedascleangaslineadditivestoreplaceMTBE．Sinceitismaturetoproducesyngasfromcoal，itissignificanttostudythesynthesisofhigheralcoholsfordevelopingcleanfuelsandreducingenvironmen

4、tpollutions．Inthisdissertation，theeffectsofthepreparationmethodsandthecalcinationtemperaturesofthesupports，thecalcinationandreductiontemperaturesofthecatalystprecursorsonthetexturestructuresofthesupportsandthecatalystprecursorsandthecatalyticperforman

5、cesofCu／Zr02catalystsonCOhydrogenationtohigheralcoholswereinvestigated．Thesupport(Zr02)waspreparedbydifferentmethods(traditionalprecipitationmethod，shortenedas“CP”．andalcogel／thermaltreatedwithnitrogenmethod，shortenedas“AN'’)，Tll太原理T入学硕f：研究生学位论文andthe

6、catalystsCu／Zr02werepreparedbyimpregnationmethod．ThesupportsandcatalystswerecharacterizedbyBET,XRD．TEMandTPR．Theresultsshowedthat，thesupportZr02一ANandtherelevantCu／Zr02一ANcatalystshadhigherBETSurfaceaeraandhigherCOhydrogenationactivityandselectivityto

7、oxygenatesthanthesupportZr02-CPandtherelevamcatalyst．ItrevealedthatthecatalystwithsupportZr02-AN一550whichwascalcinatedat550。C，andthecatalystprecursorswhichwascalcinatedat350℃andreducedat260℃hadhigheractivityandselectivity．TheconversionofCOwas12，7％．and

8、theSTYofoxygenatesandiso—butanolwere229．0gmg。hand3．1eCKg‘h．respectively,undertheconditionsof300。C，6MPa,H2／CO=2and10000h．1．DifferentcontentsofMnwereaddedtoCu／Zr02catalystsforinvestigatingtheeffectofMnonthecatalyticperformance．Thesurfaceproperti