摘要
考察了Ｎａ２Ｏ－ＳｉＯ２－Ａｌ２Ｏ３－ＥＤＡ干粉体系中是否加入ＮａＦ以及加入量对产品物相及结晶度的影响。结果表明，当反应体系不加ＮａＦ时，产物为结晶度高的单一晶相的ＺＳＭ－３５沸石，而体系中加入ＮａＦ时，产品中有ＺＳＭ－５沸石物相出现，而且随着ＮａＦ加入量的增加，产品物相完全转化为具有很高结晶度的单一相ＺＳＭ－５沸石。
Effects of no addition or addition of NaF and the amount of NaF added on product and crystallinity in dry powder system of Na2O-SiO2-Al2O3-EDA were discussed The phases and degrees of crystallization of samples were characterized by means of X-ray diffraction (XRD) It can be shown that ZSM-35 with high crystallinity was synthesized without addition of NaF When NaF was added, ZSM-5 was also obtained besides zeolite ZSM-35 And with an increase of the amount of NaF, the products were completely transformed into ZSM-5 with higher crystallinity The results suggest that F- had significant structure-directing function on the ZSM-5 formation of in dry powder system
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第2期126-129,共4页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金
关键词
沸石
合成
ZSM-5沸石
干粉体系
fluoride, ZSM-5, structure-directing function, dry powder system
