醋酸甲酯加氢制乙醇的研究.pdf

摘要上海师范人学硕士学位论文的高度分散的铜物种;并且形成有利于反应物醋酸甲酯分子与产物乙醇分子扩散的催化剂孔道结构。蒸氨法均匀沉淀制备的催化剂反应性能高于其他方法制备的催化剂,这可能与它具有高度分散的铜物种和合适的孔道结构有关。采用蒸氨法制备了一系列不同铜含量的Cu/Si02催化剂,在固定床微型反应器上考察了催化剂上醋酸甲酯加氢制备乙醇的反应性能。研究了铜含量、焙烧温度和助剂对催化剂反应性能的影响。在优化的催化剂上考察了反应压力、氢酯比和液时空速等反应工艺条件对催化剂反应性能的影响,确定了最佳反应工艺条件。考察了优选催化剂的稳定性,并对催化剂失活原因进行了分析,结果表明积碳是导致的催化剂孔结构的变化可能是催化剂失活的主要原因。关键词:乙醇;酸酸甲酯;催化加氢;C“Si02催化剂。论文类型:C H 上海师范大学硕士学位论文 Abstract Abstract Ethanol is an imponant chemical谢w iswidely used food manufacturc,chemical iIlduStry’medicine and otherfields,eSpecially been used嬲 present,the maillly process the production如r ethaIlol is 佬mentation has锄obvious drawback Chilla, bec肌se pete withpeople for南od est w曲food for prctreatment ofthecellulose佗nnentation isdimcult alldmay bring process theproduction如r dh锄ol isEthylene hydration,but it hasbeen e“minated gradually asitshigh ofgas-based etllanol production hascaused widespread concem. Nowadays,the technology ofbothmethanol carbonylation toaceticacid锄d acctic acidesterification toester iSextremely ,the overproduction of aceticacidbrings theraw material price process ofacetic ester—aceticacid hydrogenation南r ethanol has adiStillctadVantage,which isthehotspot ofsynthesis gas—based,the ethaIloltecIulology:Considering theapproach ofdirecthydrogenation ofaceticacidneeds harsh process cond“paring withthis,hydrogenation of acetic acid Via ester isbetter南r core technoIogy of indirect hydrogenation isthecatalyst ofhydrogenation of acetate studiesthe impact of cataIysts and reaction conditions for the hydrogenation of methyI prima叮catalyst,carrie‘additiVes to Study catalyStpreparation method锄d cond“ions on the basisoftheopt岫um catalySt,we mrther study theimpact ofprocess conditions on thecatalySt per南rrIlance,the stability ofthecatalyst锄d catalyst deactivation reasons