甲酸分解Pd-AC催化劑的制備與應(yīng)用研究.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文甲酸分解PdAC催化劑的制備與應(yīng)用研究姓名：方向紅申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：崔鵬20090401StudyonthepreparationandapplicationofPd／ACcatalystfordecompositionofformicacidsolutionAbstractPd／ActiveCarbon(Pd／AC)catalystswerepreparedbydipping—reduc

2、ingmethods，andtheeffectofthemodificationoftheactivatedcarbononthedecompositionofformicacidsolutionWaSstudiedThepreparationconditionofthecatalystsandreactionconditionsforformicaciddecompositionwasoptimized，andthedecomposi

3、tionreactionkineticsandmechanismofformicacidsolutionwereinvestigatedBasedontheexperimentdatatheessentialinvestigationresultsweresummarizedasfollowsTheeffectofthemodifier(acid，alkali，salt)onthecarrierwasinvestigatedItisfo

4、undthatamongthesemodifiers，alkaliisthebestmodifierandtheorderoftheperformanceofthecatalystsisasfollowsfromgreatertolowerAlkali，salt，acidThecatalystwhichismodifiedbyweakbaseWasmoreactivethanthatmodifiedbystrongbaseinalkal

5、icatalystmodificationThecatalystwhichismodifiedbyNa2C03showsthebestcatalyticactivityandthedecompositionrateofformicacidsolutioncanreachto864％ThepreparationconditionsofPd／ACcatalystwereoptimizedAndtheoptimumconditionsarea

6、sfollows，thecarrierACWaspretreatedin1％Na2C03solution，thenimpregnatedinPdCl2solutionfor5minutes，andformicacidsolutionWasputintothesolutionteducepd2at70。C，themoleratioofmethanal／Pdwascontrolledat1：08，thecatalystthenwas“eda

7、t80“Candcalcinedat400。CinNitrogenfor3hTheoptimumreactionconditionswereinvestigatedandlistedasfollows，theinternalandexternaleffectCanbeeliminatedundertheconditionsthatthehuntingspeedisat200RPMandtheparticlesizeis80100mesh

8、esUnderthoseconditions，itWaSstudiedthatwiththeincreasingofreactiontemperature；、7Iriththeincreasingofcatalystusageandthereactiontime，thedecompositionrateofformicacidsolutionWasincreasedlinearly；andafterreactingfor110min，t