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时间:2020-03-26
《有序介孔二氧化硅对正丁醛的吸附性能.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、物理化学学~(WuliHuaxueXuebao)DecemberActaP.一Chim.Sin.2014,30(12),2307-23142307[Article】doi:10.3866/PKU.WHXB201410142www.whxb.pku.edu.cn有序介孑L二氧化硅对正丁醛的吸附性能黄天辉’赵玉娟田兆福’李小兰’刘茜’赵东元,(广西中烟工业有限责任公司技术中心,南宁530001;复旦大学化学系,上海200433)摘要:合成了一系列具有不同孔结构与性质的有序介孔二氧化硅材料SBA15、MCM.41、SBA.16、KlT_6,同时通过改变水
2、热温度制备了不同孔径大小的SBA.15,并利用小角X射线散射、透射电镜、扫描电镜和氮气吸附.脱附等手段,对其介孔结构进行了表征.以正丁醛为探针分子,考察了其对有机醛的吸附,并与Y_沸石的吸附性能做了对比.结果表明,材料的介孔比表面积与其对正丁醛的吸附量成正比,吸附等温线符合Langmuir模型,属于单层吸附,具有最大介孔比表面积的MCM.41对正丁醛的吸附量最大(484mg·g).最后将SBA一15添加到卷烟滤嘴中,实验结果表明,SBA.15能显著降低卷烟烟气中巴豆醛的释放量.关键词:介:~L-氧化硅;合成:吸附:丁醛:巴豆醛:卷烟烟气中图分类号:
3、0647AdsorptionPropertiesofOrderedMesoporousSilicaforButyraIdehydeHUANGTian.Hui’ZHAOYu—JuanTIANZhao—Fu’LlXiao.Lan’LIUQian’ZHAODong—Yuanl(TechnologyCentre,ChinaTobaccoGuangxiIndustrialIncorporation,Nanning530001,尸R.China;2DepartmentofChemistry,FudanUniversity,Shanghai200433,PR.C
4、hina)Abstract:0rderedmesoporoussilicamaterialsSBA.15,MCM一41,SBA.16。KJ1-_6withdifferentporesizesandpropertieswereprepared.SeveraISBA.15materialsweresynthesizedwithdifferentporediametersbychangingthehydrothermaltemperature.Thematerialsproducedwerecharacterizedusingsmall-angleX-r
5、ayscattering(SAXS),transmissionelectronmicroscopy(TEM),scanningelectronmicroscopy(SEM),andnitrogenadsOrptiOn,des0rptiOn.TheadsorptionisothermsofOrganicaldehydeweremeasured,usingbutyraldehydeasamodelmolecule.TheresultswerecomparedwiththosefortheadsorptioncapacityofY-zeolite;the
6、yshowedthatthespecificsurfaceareaoriginatingfromthemesoporeswasproportionaltotheamountofbutyraldehydeadsorption.TheadsorptionisothermsagreedwithLangmuirmodeformonolayeradsorption.MesoporoussilicaMCM-41withthehighestmesoporespecificsurfaceareashowedthehighestadsorbedamountofbut
7、yraldehyde(484mg·g).TheSBA_15samplewasselectedforthefabricationofcigarettefilters,andtheresultsshowedthatSBA一15significantlyreducedtheamountofCrotonaldehydereleasedincigarettesmoke.KeyWords:Mesoporoussilica;Synthesis;Adsorption;Butyraldehyde;CrotonaldehydeCigarettesmoke1引言刺激作用
8、.选择性吸附醛类物质受到了人们广泛关低分子量的有机醛酮化合物是大气的主要污注.Konuspaev等报道了铑黑对不饱和醛类的
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