Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions

doi:10.1016/S1004-9541(14)60019-7

Chinese Journal of Chemical Engineering ›› 2014, Vol. 22 ›› Issue (1): 120-126.DOI: 10.1016/S1004-9541(14)60019-7

• 材料与产品工程 • 上一篇

Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions

周华兰¹, 吴雅静², 张伟¹, 王军¹

1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China;
2 College of Sciences, Nanjing University of Technology, Nanjing 210009, China

收稿日期:2012-03-22 修回日期:2012-10-10 出版日期:2014-01-05 发布日期:2014-01-04
通讯作者: WANG Jun
基金资助:
Supported by the National Natural Science Foundation of China (20976084, 21101094, 21136005).

Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions

ZHOU Hualan¹, WU Yajing², ZHANG Wei¹, WANG Jun¹

1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China;
2 College of Sciences, Nanjing University of Technology, Nanjing 210009, China

Received:2012-03-22 Revised:2012-10-10 Online:2014-01-05 Published:2014-01-04
Contact: WANG Jun
Supported by:
Supported by the National Natural Science Foundation of China (20976084, 21101094, 21136005).

摘要/Abstract

摘要： 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 diffraction), 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℃, 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.

关键词: crystal growth, microporous materials, SUZ-4 zeolite, zeolite synthesis, organic template-free

Abstract: 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 diffraction), 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℃, 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.

Key words: crystal growth, microporous materials, SUZ-4 zeolite, zeolite synthesis, organic template-free

周华兰, 吴雅静, 张伟, 王军. Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions[J]. Chinese Journal of Chemical Engineering, 2014, 22(1): 120-126.

ZHOU Hualan, WU Yajing, ZHANG Wei, WANG Jun. Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions[J]. Chin.J.Chem.Eng., 2014, 22(1): 120-126.

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Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions

Organotemplate-free Hydrothermal Synthesis of SUZ-4 Zeolite：Influence of Synthesis Conditions

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