中国化学工程学报（英文版）
中國化學工程學報（英文版）
중국화학공정학보（영문판）
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2014年
1期
120-126
,共7页
周华兰%吴雅静%张伟%王军
週華蘭%吳雅靜%張偉%王軍
주화란%오아정%장위%왕군
crystal growth%microporous materials%SUZ-4 zeolite%zeolite synthesis%organic template-free
Various conditions were investigated in detail for the novel organic template-free static hydrothermal synthesis of SUZ-4 zeolite in the presence of seeds. The obtained samples were characterized by XRD (X-ray dif-fraction), SEM (scanning electron microscope), TG (thermal gravimetric analysis), ICP (inductively coupling plasma) elemental analysis, nitrogen sorption isotherm and surface area. The results show that pure SUZ-4 zeolites with high crystallinity are obtained in a broad window of synthesis conditions:seed mass concentration 0.2%-2%, SiO2/Al2O3 molar ratio 21-25, KOH/SiO2 molar ratio 0.33-0.43, H2O/SiO2 molar ratio 7.14-38.1, aging time 24 h, crystallization temperature 160 °C, and crystallization time 6-10 d. Also, crystallinity and size of the rod-like SUZ-4 zeolite crystals are found to alter with the conditions.
