水熱法制備納米復(fù)合粉體催化劑及其合成碳納米管的研究.pdf

1、廣東工業(yè)大學(xué)碩士學(xué)位論文水熱法制備納米復(fù)合粉體催化劑及其合成碳納米管的研究姓名：陳玉蓮申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料物理與化學(xué)指導(dǎo)教師：朱燕娟20050101￡蠻三些奎蘭三竺堡圭耋堡鎏蘭ABSTRACTThehydrothenmame血odvcllsusedtosynthesizedthetransitionmetalnanocompoundpowderwiththehydrothermalprecursorAndtheprecursor

2、waspreparedbySolGelmethodusingtheTEOS(tetraethylorthosilicate)andthetransitionmetalnitrate(thenickelnitrateorthecobaltnitrate)asthematerialammoniaorthesoditunhydroxideastheprecipitatorThetransitionmetalnanocompoundpowder

3、weredeoxidizedbyH2，thencatalyzedandcrackedC2H2tosynthesizecarbonnanombeThetransitionmetalnanocompoundpowderandthecarbonmmotuubewel_；emeasuredt11fou盡血theXRD，TEM，SEMandRamunFromthose，theoptimizedconditionshadbeengottothepr

4、eparationofthecatalystsandthecarbonnanombes1ThepreparationofthecatalystsbySol—GoldydrothermalmethodTheeffectoftheratioofSi：Ni，differentprecipitatorPH，letoldtimehydrothermaltemperatureandtheletouttimetothecatalystshavebee

5、nstudied，includingthephrase，thediameterthecrystallizationandtheactivityofthecatalystsTheresultsofTEM，SEMandXRDshowed：thecrystallizationoftheNi(OH)2／Si02n&nocompoundpowderpreparedbyhy&othermalmethodwasiI蹦ascdwiththeadding

6、ofNi％’：thediameterwerealsoincreasedwiththerisingofletouttimewhilethediameterofthecatalystsfirstreducedfmallyincreasingwiththeheightenerofthePHValue；thediameterwaslargerusingmethesodiumhydroxidecomparewiththeammoniaasthep

7、reeipitator；rasingtheletouttime，theshapeofNi(OH)2／Si02waschangedfromaeiculartosheet；differentphasecatalystswereproduceddifferenthydrothermaltemperature；at200“Chydrothermaltemperature，hydroxidcompoundpowderwercgotfromthen

8、ickelmaterialwhileoxidcompoundpowderfromthecobaltmaterial2ThepreparationofthecarbonnanotubesUsingthetransitionmetalnanocompoundpowderasthecatalysttheethaneasthereactivegas，thefinemultiwallcarbonnanombesweregotbychemicalv