CAJ | 학술논문

通过一种新颖的两步合成方法,即先用改性剂溶液对镀有二氧化硅缓冲层的多孔氧化铝(孔径0.1～0.5μm)载体管进行浸泡处理,再水热合成,制备了silicalite-1分子筛膜,并考察了晶化温度、晶化时间对成膜的影响.采用溶胶-凝胶(sol-gel)法,在最优粘度5～25 cp内制得平整连续的介孔缓冲层,达到了修饰载体材料表面性能的目的.X射线衍射(XRD)和扫描电镜(SEM)结果表明,160℃下,晶化24 h得到表面致密、连续的6取向的silicalite-1分子筛膜.
통과일충신영적량보합성방법,즉선용개성제용액대도유이양화규완충층적다공양화려(공경0.1～0.5μm)재체관진행침포처리,재수열합성,제비료silicalite-1분자사막,병고찰료정화온도、정화시간대성막적영향.채용용효-응효(sol-gel)법,재최우점도5～25 cp내제득평정련속적개공완충층,체도료수식재체재료표면성능적목적.X사선연사(XRD)화소묘전경(SEM)결과표명,160℃하,정화24 h득도표면치밀、련속적6취향적silicalite-1분자사막.
A novel two-step method were used to synthesize silicalite-1 membranes on porous alumina supports(pore size of 0.1-0.5 μm).Firstly,alumina ceramic tubes with buffer layer were immersed in modifier solution for a few hours.Secondly,silicalite-1 membranes were prepared through hydrothermal synthesis.Effects of crystallization temperature and crystallization time on the growth of molecular sieve membrane were investigated.Smooth and continuous amorphous mesoporous silica buffer layer was prepared on the surface of the support using sol-gel technique.From X-ray diffraction(XRD)and scanning electron microscope(SEM)images,the compact and b-oriented silicalite-1 membrane was obtained when the conditions of crystallization were 160℃and 24 h.