高校化学工程学报
高校化學工程學報
고교화학공정학보
JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES
2015年
2期
431-436
,共6页
分子筛膜%不锈钢纤维%二次生长法%阳极氧化法%晶化温度%晶化时间
分子篩膜%不鏽鋼纖維%二次生長法%暘極氧化法%晶化溫度%晶化時間
분자사막%불수강섬유%이차생장법%양겁양화법%정화온도%정화시간
zeolite membrane%stainless steel fiber%secondary growth method%anodic oxidation method%crystallization temperature%crystallization time
以正硅酸乙酯为硅源，采用二次生长法制备了不锈钢微纤复合纯硅分子筛膜，考察了载体预处理方式、晶化温度和晶化时间对分子筛膜性能的影响，利用X射线衍射仪(XRD)、扫描电镜(SEM)和ASAP-2020自动吸附仪对其形态和微观结构进行分析表征。结果表明，采用阳极氧化法预处理载体所制备的纯硅分子筛膜较采用高温煅烧法预处理的膜表观形态更为连续规整。随着晶化温度从100℃升高到160℃或晶化时间从12 h延长到96 h，分子筛膜表面更加致密，晶体颗粒尺寸增加。不锈钢微纤复合纯硅分子筛膜的比表面积、总孔容和微孔孔容分别为93.24 m2?g?1、0.0654 cm3?g?1和0.0382 cm3?g?1，微孔孔容占总孔容的58%，相应的纯硅分子筛膜负载量为23.3%(wt)。
以正硅痠乙酯為硅源，採用二次生長法製備瞭不鏽鋼微纖複閤純硅分子篩膜，攷察瞭載體預處理方式、晶化溫度和晶化時間對分子篩膜性能的影響，利用X射線衍射儀(XRD)、掃描電鏡(SEM)和ASAP-2020自動吸附儀對其形態和微觀結構進行分析錶徵。結果錶明，採用暘極氧化法預處理載體所製備的純硅分子篩膜較採用高溫煅燒法預處理的膜錶觀形態更為連續規整。隨著晶化溫度從100℃升高到160℃或晶化時間從12 h延長到96 h，分子篩膜錶麵更加緻密，晶體顆粒呎吋增加。不鏽鋼微纖複閤純硅分子篩膜的比錶麵積、總孔容和微孔孔容分彆為93.24 m2?g?1、0.0654 cm3?g?1和0.0382 cm3?g?1，微孔孔容佔總孔容的58%，相應的純硅分子篩膜負載量為23.3%(wt)。
이정규산을지위규원，채용이차생장법제비료불수강미섬복합순규분자사막，고찰료재체예처리방식、정화온도화정화시간대분자사막성능적영향，이용X사선연사의(XRD)、소묘전경(SEM)화ASAP-2020자동흡부의대기형태화미관결구진행분석표정。결과표명，채용양겁양화법예처리재체소제비적순규분자사막교채용고온단소법예처리적막표관형태경위련속규정。수착정화온도종100℃승고도160℃혹정화시간종12 h연장도96 h，분자사막표면경가치밀，정체과립척촌증가。불수강미섬복합순규분자사막적비표면적、총공용화미공공용분별위93.24 m2?g?1、0.0654 cm3?g?1화0.0382 cm3?g?1，미공공용점총공용적58%，상응적순규분자사막부재량위23.3%(wt)。
Stainless steel microfibrous supported silicalite-1 zeolite membrane (silicalite-1 membrane/SMF) was prepared by secondary growth method from TEOS as Si source. The effects of different operation parameters such as support pretreatment methods, crystallization temperature and crystallization time on the silicalite-1 membrane/SMF were studied. The morphology and microstructure of silicalite-1 membrane/SMF were characterized by XRD, SEM and ASAP-2020 automatic adsorption instrument, respectively. The results show that the silicalite-1 zeolite membrane prepared by treating support with anodic oxidation method is more continuous and denser than that with calcinations. The surface of zeolite membrane is much denser and the size of crystal grains increases with increasing the crystallization temperature from 100℃ to 160℃ or prolonging the crystallization time from 12h to 96h. The specific surface areas, total pore volume and micropore volume of the silicalite-1 membrane/SMF are 93.24 m2?g?1, 0.0654 cm3?g?1 and 0.0382 cm3?g?1, respectively. The percentage of micropore volume is 58% of total pore volume.The silicalite-1 membrane content determined for silicalite-1/SMF composite is 23.3 %(wt).
