資源描述：
《蔗渣活性炭二次活化制備及其吸附CO2性能研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、第32卷第1期無(wú)機(jī)材料學(xué)報(bào)Vol.32No.12017年1月JournalofInorganicMaterialsJan.,2017文章編號(hào):1000-324X(2017)01-0018-07DOI:10.15541/jim20160293蔗渣活性炭二次活化制備及其吸附CO2性能研究魏建文,林志峰,何澤瑜,和凱凱,耿琳琳,廖雷(桂林理工大學(xué)廣西礦冶與環(huán)境科學(xué)實(shí)驗(yàn)中心,桂林541004)摘要:以蔗渣為原料,以ZnCl2為活化劑制備出活性炭AC,并用KOH對(duì)活性炭AC進(jìn)行二次活化制備活性炭KAC。用熱重法測(cè)定材料的CO2吸附脫附性能,傅里葉紅外光譜、氮?dú)馕锢砦建C脫附和掃描
2、電鏡對(duì)樣品進(jìn)行表征。結(jié)果表明：KAC具有優(yōu)異的CO2吸附性能,在60℃下其對(duì)CO2吸附量可達(dá)3.45mmol/g,而AC的CO2吸附量?jī)H有1.79mmol/g。KAC的CO2吸附能力明顯優(yōu)于AC。循環(huán)吸附脫附的結(jié)果表明,經(jīng)過(guò)5次吸附–脫附,材料的吸附量無(wú)顯著變化,表明材料具有良好的再生性能。傅里葉紅外分析結(jié)果表明兩種活性炭材料的特征峰基本一致,活性炭表面官能團(tuán)中羥基和羧基可以使活性炭表面的極性增大。氮?dú)馕锢砦建C脫附和掃描電鏡結(jié)果表明材料都具有發(fā)達(dá)的孔徑結(jié)構(gòu),但KAC的孔徑結(jié)構(gòu)比AC更發(fā)達(dá),因此其對(duì)CO2的吸附能力也更強(qiáng)。關(guān)鍵詞:蔗渣;活性炭;二次活化;二氧化碳;吸附中
3、圖分類號(hào):TQ174文獻(xiàn)標(biāo)識(shí)碼:ABagasseActivatedCarbonReactivationPromotesAdsorptionofCO2WEIJian-Wen,LINZhi-Feng,HEZe-Yu,HEKai-Kai,GENGLin-Lin,LIAOLei(GuangxiScientificExperimentCenterofMining,MetallurgyandEnvironment,GuilinUniversityofTechnology,Guilin541004,China)Abstract:Activatedcarbon(AC)wasprepar
4、edfrombagasseusingZnCl2astheactivator.Thenewtypeofacti-vatedcarbon(KAC)waspreparedfromACusingKOHasthesecondactivator.CO2adsorption/desorptionproper-tiesweredeterminedbythermalgravimetricanalysismethod(TGA).Theactivatedcarbonmaterialswerecharacter-izedbyFouriertransforminfraredspectroscop
5、e(FTIR),N2adsorption-desorptionandscanningelectronmicroscope(SEM).TheresultsshowedthatCO2adsorptionquantitiesofKACandACwere3.45mmol/gand1.79mmol/g,re-spectivelyat60℃.KAChasabetteradsorptioncapacitythanAC.TheCO2adsorptioncapacityafterfiveadsorp-tion/desorptioncyclesshowednoobviouschanges,
6、displaythematerialsgoodregenerationperformance.There-sultsofFTIRspectrashowedthatthecharacteristicpeaksofthetwoactivatedcarbonmaterialswerealmostthesame.Thepolarityoftheactivatedcarbonsurfaceincreasedwiththeincreaseofhydroxylandcarboxylgroupsonactivatedcarbons.N2adsorption-desorptionspec
7、traandSEMimagesdemonstratedthatallthetwokindsofmateri-alshadabundantpores,andKAChadmuchmoreporeswhichresultedinbetteradsorptioncapacity.Keywords:bagasse;activatedcarbon;reactivation;carbondioxide;adsorption收稿日期:2016-05-03;收到修改稿日期:2016-06-20基金項(xiàng)目:國(guó)家自然科學(xué)基金(51566003);廣西自然科學(xué)基金
