Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (5): 981.doi: 10.7503/cjcu20200015

• Article: Inorganic Chemistry • Previous Articles     Next Articles

Synthesis of NaA Zeolite Using Diatomite as Silicon Source and Its Proton Conduction Property

SHI Huaizhong,MA Wenyan,ZHANG Jiani,LI Jiyang()   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry,Jilin University, Changchun 130012, China
  • Received:2020-01-09 Online:2020-05-10 Published:2020-03-17
  • Contact: Jiyang LI E-mail:lijiyang@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(21671075)

Abstract:

By utilizing diatomite as the silicon source, LTA-type silica-alumina zeolite NaA was rapid synthesized in the Na2O-Al2O3-SiO2(diatomite)-H2O system under hydrothermal condition at low temperature. By adjusting the crystallization temperature and the activity of diatomite, the synthesis process of NaA zeolite has been further optimized, and pure phase of NaA zeolite was achieved at 70 ℃ for 3 h with stirring. The as-synthesized NaA zeolite exhibits good proton conduction property. Its proton conductivity is 1.72 10-3 S/cm under the condition of 100%RH(Relative humidity) at room temperature. With the increase of temperature, the proton conductivity increases gradually, and the conductivity of NaA-4 reaches 5.96 10-3 S/cm at 80 ℃ and 100%RH.

Key words: Zeolite, Low-temperature and rapid synthesis, Diatomite, NaA, Proton conduction

CLC Number: 

TrendMD: