富氫氣體中CO選擇性氧化催化劑考察.pdf

1、北京化工大學(xué)碩士學(xué)位論文富氫氣體中CO選擇性氧化催化劑考察姓名：王超申請學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工藝指導(dǎo)教師：徐新20070530摘要STUDYoFCoSELECTIVEOXIDATIoNINCATALYSTSINHYDRoGENIUCHGASABSTRACTThecatalystsofactivityandselectivityforCOoxidationinhydrogenrichgas，preparedbycoprecipitat

2、ion，impregnationanddepositionprecipitionmethod，wasstudiedEffectsofpreparationconditionandreactionconditiononthecatalyticperformancehavebeeninvestigatedandthecatalystswerecharacterizedbyXRD，TEMandFTIRmethodsItwasfoundthat

3、thepreparationconditionhasgreatinfluenceonthecatalyticperformanceofthecatalystsAu(2％)／ZnO(2％)／TiOzandAu(2％)／NiO(5％)／IiOzcatalystspreparedbydepositionprecipitionmethodhashigheractivitythanothercatalystsTheresultsindicated

4、thatcatalysthasbestperformancewhenitiscalcinatedat300“Cfor3h，pretreatedinH2at300℃for6h，ureaasprecitantandPHvalueshouldbecontrolledintherangeof911EffectofreactionsonthecatalystswasinvestigatedBecausethereactionofCOselecti

5、veoxidationinhydrogengasisemittingheatreaction，Theoptimumreactiveconditionsforcatalystare：thereactionoptimumtemperatureat30℃，thecatalystAu(2％)／NiO(5％)]T102cankeepgoodstabilityfor48hwhenSpacevelocity(WHSV)reachesto3000h一，