SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2014, Vol. 22 ›› Issue (1): 120-126.DOI: 10.1016/S1004-9541(14)60019-7

• MATERIALS AND PRODUCT ENGINEERING • Previous Articles    

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

ZHOU Hualan1, WU Yajing2, ZHANG Wei1, WANG Jun1   

  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
  • Received:2012-03-22 Revised:2012-10-10 Online:2014-01-04 Published:2014-01-05
  • Contact: WANG Jun
  • Supported by:

    Supported by the National Natural Science Foundation of China (20976084, 21101094, 21136005).

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. 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
  • 通讯作者: WANG Jun
  • 基金资助:

    Supported by the National Natural Science Foundation of China (20976084, 21101094, 21136005).

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

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