One-Step Synthesis of High-Silica ZSM-5 in the Absence of Organic Amine

作者：Hu Su-Fang; Wang Yan; Ma Jing-Hong^*; Li Rui-Feng

来源：CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2020, 35(12): 2253-2259.

DOI：10.11862/CJIC.2019.263

• absence of organic amine
• ZSM-5 zeolite
• high-silica
• hydrothermal synthesis

The plate -like high -silica ZSM-5 zeolite (n(Sio2)/nAl(2)O(3)>90) with uniform morphology was synthesized by hydrothermal method at a lower crystallization temperature (130 degrees C) in the absence of organic amine and seed. The effects on ratio of the amount of substance of reactants on the synthesis of high -silica ZSM-5 zeolite were systematically investigated. The synthesized high -silica ZSM-5 zeolite was characterized by XRD, FT-IR, SEM, N2 adsorption/desorption and Si-29 MAS NMR techniques. Results confirmed that the synthesized ZSM-5 zeolite (nC(2)H(5)OH/nsiO(2)=2.8, n(Na2)O/nSio(2)=0.14, n(SiO2),/n(Al2O3)=150) exhibited high crystallinity of the product. The specific surface area and micropore volume were 409 m2.g-1 and 0.14 cm'" 29Si MAS NMR analysis showed that the n(SiO2),/n(Al2O3) was 96.4.

• 单位
  太原理工大学