苯甲腈選擇性加氫制備苯甲胺的催化劑研究.pdf

1、學(xué)校代碼：10270分類號(hào)：0643學(xué)號(hào)：132200898碩士學(xué)位論文苯甲腈選擇性加氫制備苯甲胺的催化劑研究學(xué)院：生命與環(huán)境科學(xué)學(xué)院專業(yè)：工業(yè)催化研究方向：催化加氫研究生姓名：朱舒雅_(tái)__________指導(dǎo)教師：張舂雷教授完成日期2016年3月AbstractShanghaiNmalUniversityMasterofPhilosophyAbstractBenzylamineisanimptantganicsynthesisinte

2、rmediatesandrawmaterialoffinechemicals.Withthefastdevelopmentofchemicalindustrythedemandfbenzylamineincreasing.AtpresentmostbenzylaminerelyonfeignimptsfromGermanytheUnitedStatesJapan.Theproductiontechnologyofbenzylaminei

3、sbackwardTherefethedevelopmentofefficientproductionprocessesbenzylaminewillhavegoodmarketprospects.Thehydrogenationcatalystfrombenzonitriletobenzylaminewithexcellentperfmancewhichusepalladiumasanactiveingredientwasstudie

4、dunderthefixedbedreactionconditionsinthispaper.Comparedwiththeliteraturethepalladiumcontentisgreatlyreducedandthereactionconditionsaremilderwhichprovidesaveryusefultheeticalfoundationfthecontinuousindustrialproductionofb

5、enzylaminefromhydrogenationofbenzonitrile.Themaincontentsandresultsofthispaperareasfollows:1.DifferentcatalystsystemswerescreenedSupptedcatalystsPdyAl2O3preparedbyimpregnationistheoptimalcatalystsystemTheeffectsofdiffere

6、ntactivemetalloadingonreactionperfmancewerecompared.Preferredactivemetalloadingis0.5wt%.Besidesthepreparationconditionsofimpregnationwereoptimized.2.Theeffectsofdifferentreactionconditionsonreactionperfmancewereinvestiga

7、tedandthereactionconditionswereoptimized.Suitablereactionconditionsareasfollows:reactiontemperature7090C，reactionpressure1.5MPahydrogenbenzonitrileratio1040WHSV0.5h1.Undertheseconditionsthehighestyieldofbenzylamineis88.8

8、%.3.Catalyststabilitywasinvestigatedtheresultsshowedthatthecatalystisabletorunstablyf209h.Thentheconversionrateofbenzylamineisbelow97%.Thereisn’tagreatactivemetalcomponentloss.Palladiummetalparticlesizedoesn’tgrowsup.Man

9、ymaterialscoverthesurfaceofthecatalystwhichleadstothesurfaceareapevolumeandpesizeofcatalystdecrease.Thesurfacematerialsisthemaincauseofcatalystdeactivation.Keywds:benzonitrilebenzylaminecatalytichydrogenationfixdbedstabi