能源化学(英文版)

能源化学(英文) ›› 2003, Vol. 12 ›› Issue (1): 63-73.

• Articles • 上一篇    下一篇

In Situ Synthesis of NaY Zeolite with Coal-Based Kaolin

Xinmei Liu, Zifeng Yan, Huaiping Wang, Yantuo Luo   

  1. State Key Laboratory for Heavy Oil Processing, Key Laboratory of Catalysis, CNPC, University of Petroleum, Dongying 257061, China
  • 出版日期:2003-03-30 发布日期:2003-03-30

In Situ Synthesis of NaY Zeolite with Coal-Based Kaolin

Xinmei Liu, Zifeng Yan, Huaiping Wang, Yantuo Luo   

  • Online:2003-03-30 Published:2003-03-30

PDF

2241

摘要： NaY zeolites were in-situ synthesized from coal-based kaolin via the hydrothermal method. The e ects of various factors on the structure of the samples were extensively investigated. The samples were characterized by N2 adsorption, XRD, IR and DTG-DTA methods, and the results show that the crystallization temperature and amount of added water play an important role in the formation of the zeo- lite structure. The 4A and P zeolites are the competitive phase present in the resulting product. However, NaY zeolites with a higher relative crystallinity, excluding impure crystals and the well hydrothermal sta- bility, can be synthesized from coal-based kaolin. These zeolites possess a larger surface area and a narrow pore size distribution, and this means that optimization of this process might result in a commercial route to synthesize NaY zeolites from coal-based kaolin.

关键词: coal-based kaolin, NaY zeolite, in-situ hydrothermal synthesis

Abstract: NaY zeolites were in-situ synthesized from coal-based kaolin via the hydrothermal method. The e ects of various factors on the structure of the samples were extensively investigated. The samples were characterized by N2 adsorption, XRD, IR and DTG-DTA methods, and the results show that the crystallization temperature and amount of added water play an important role in the formation of the zeo- lite structure. The 4A and P zeolites are the competitive phase present in the resulting product. However, NaY zeolites with a higher relative crystallinity, excluding impure crystals and the well hydrothermal sta- bility, can be synthesized from coal-based kaolin. These zeolites possess a larger surface area and a narrow pore size distribution, and this means that optimization of this process might result in a commercial route to synthesize NaY zeolites from coal-based kaolin.

Key words: coal-based kaolin, NaY zeolite, in-situ hydrothermal synthesis