層狀鑭鈦酸鹽的制備與改性.pdf

1、南京理工大學(xué)碩士學(xué)位論文層狀鑭鈦酸鹽的制備與改性姓名：劉冠鵬申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：陸路德楊緒杰20040714碩士論文層狀鑭鈦酸鹽的制備與改性AbstractLayeredlanthanumtitanatesaresomekindoffunctionalmaterialzwithhighercatalyticactivityInthisstudy，thelayeredlanthanumtitanatesK2La2Ti

2、3010andNa2La2Tia0】oweresuccessfullysynthesizedbycitricacidsol—gelmethodunderrelativelylowertemperature，andthepossiblemechanismwasprimarilybroughtforwardwiththeassistantofXRD，TG／DTA，F(xiàn)T—IRetcTheprocessofmodifyinglayeredK2L

3、a2Ti301BwasstudiedNotonlytheeffectsofdifferentkindsofacidontheexchangedproductswereinvestigated，butalsothekineticmechanismofacidexchangereactionswasinvestigatedwitharesultthattheapparentorderofreactionwas0716andtheappare

4、ntvelocityconstantwas001s～Differentlong—chainaminesweresuccessfullyintercalatedintothelayerswithone—stepreactionundercirculationrefluxconditionsDifferenttransitionmetalswereloadedintoK2LasTi抑1。Ultravioletcharacteristieso

5、ftheproductswerestudied，andtheresultshowedthattheenergygapsdeclineddifferentlyaccordingtodifferentmetalsSimultaneously，thesupportedproductsphotocatalysisdegradingaminobenzenewasexperimented，andtheoptimumcatalyticactivity

6、WaSattainedwhenpHvalueofthesolutionWaS10andthefedcatalystamountwas159／LItisalsofoundthatafterthecatalystwassupportedbydifferentmetalswithanoptimumamount，itsphotocatalyticactivitywasimprovedandcorrelatedwelltotheultraviol

7、etenergygapSi02La2Ti3010withhighthermalstabilityWaSfabricatedBasedonexperiments，itisprovedthattheproducthashigherphotocatalyticactivityandcandegrade80percentofaminobenzenein2hoursKeywordsLayeredlanthanumtitanatesSol—gelM