Synthesis and characterization of ferrierite-type zeolite in the presence of nonionic surfactants

被引:24
作者
Khomane, RB
Kulkarni, BD [1 ]
Ahedi, RK
机构
[1] Natl Chem Lab, Div Chem Engn, Poona 411008, Maharashtra, India
[2] Natl Chem Lab, Catalysis Div, Poona 411008, Maharashtra, India
关键词
ferrierite; surfactant; crystallization; scanning electron microscopy;
D O I
10.1006/jcis.2000.7406
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Pure-phase ferrierite (FER) zeolite has been synthesized in the presence of small amounts of nonionic surfactants, Tween 20 and Tween 80. The input SiO2/Al2O3 molar ratio has been varied over a range of 25 to 150. The results confirm that a small amount of pyrrolidine acts as a template and is necessary. The effects of varying concentration of surfactant on ferrierite crystallization and output SiO2/Al2O3 molar ratio are reported. The results also show that in the absence of pyrrolidine, ZSM-5 cocrystallized with FER, whereas in the absence of a nonionic surfactant the yield and crystallization of FER are very poor. The XRF analysis shows the changes in SiO2/Al2O3 output molar ratios as the surfactant concentration changes. The XRD data show that the samples are fully crystalline and pure. The TG/DTA of the sample shows its structural stability. The scanning electron microscopy results show changes in particle size with varying concentration of nonionic surfactant. (C) 2001 Academic Press.
引用
收藏
页码:208 / 213
页数:6
相关论文
共 28 条