催化摻雜LiBH4儲氫材料的制備及其儲氫性能的研究.pdf

1、長沙理工大學(xué)碩士學(xué)位論文催化摻雜LiBH4儲氫材料的制備及其儲氫性能的研究姓名：張慧申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：孫立賢；曹忠20120518ABSTRACTBasedonfullreviewontheadvantagesanddisadvantagesofallkindsofhydrogenstoragematerials，thisthesisfocusesonthethestudyofLiBH4ashydrogensto

2、ragematerialAdditivesdopedLiBH4systemswerepreparedbyballmillingprocessingAvarietyofcharacterizationmethods，suchasthermogravimetry(TG)，differentialscanningcalorimetry(DSC)，Xraydiffraction(XRD)，F(xiàn)ouriertransforminfraredspec

3、troscopy(FTIR)andpressure—compositiontemperatureinstrument(PCT)，wereusedforstudyingofhydrogenstorage／releaseperformance，catalyticperformance，kineticsandthermodynamicsofmaterialsThisthesisfocusesoninvestigatingoftheinflue

4、ncelawofsingledopedandCOdopedFe203andTiF3inthe2LiBH4MgH2systemonhydrogenstorageperformanceAlltheresultsshowedthateithertheFe203orTiF3singledopingcanimprovethedehydridingandrehydridingpropertiesofthesystem，andtheCOdopedsy

5、stemsaremorefavourablethanthesingleonesTheTGresultsshowedthatwhenthedopingcontentwas50wt％，theCOdopedsystembeganteleasehydrogenat120℃andthetotalhydrogendesorptioncapacitywas88wt％ThePCTresultsshowedthattheCOdopedsystemcomp

6、letedthehydrogenevolutionprocessingwithinlOminat400℃TheresultsalsoshowedthatthekineticsandthermodynamicsofCOdopedsystemswerebetterFurtherincreasingtheadditionamountcouldbetterimprovethestorage，releaseofhydrogenperformanc

7、eWhenthedopingcontentwas10wt％，theCOdopedsystembeganteleasehydrogenatl10℃andthetotalhydrogendesorptioncapacitywas96wt％ThemesoporousFe203waspreparedinlaboratoryandtheinfluencelawofmesoporousFe203dopedintheLiBH4systemwasinv

8、estigated，usingthecommercialFe203(definedasFe203’)asreferencesampleTheLiBH4—30、璣％mesoporousFe203andLiBH4—30wt％Fe203’systemwerepreparedbyballmillingprocessingTheTGresultsshowedthatthemesoporousFe203dopedintheLiBH4begantel