Journal of Guangxi Normal University(Natural Science Edition) ›› 2021, Vol. 39 ›› Issue (3): 83-91.doi: 10.16088/j.issn.1001-6600.2020052503

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Study on the Synthesis of MCM-56 Zeolite with Low SiO2/Al2O3

GUO Zeping1, DONG Pan1, LIU Jinlan1, KANG Jie1, ZENG Minyu1, SU kaimin1, LIN Qin1,2, HE Yun1*   

  1. 1. College of Physical Science and Technology, Guangxi Normal University, Guilin Guangxi 541004, China;
    2. College of Medical Information, Hainan Medical University, Haikou Hainan 571101, China
  • Received:2020-05-25 Revised:2020-10-28 Published:2021-05-13

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Abstract: The synthesis law of MCM-56 molecular sieve was studied by changing the SiO2/Al2O3,crystallization temperature and crystallization time under the conditions of oil bath heating and magnetic stirring reaction materials with HMI as template. The experimental results show that MCM-56 molecular sieves can not be obtained when the SiO2/Al2O3 is 13.33,the crystallization temperature is 138-145 ℃,and the crystallization time is 5-8 days. When the ratio of SiO2/Al2O3 is 16.67, although diffraction peaks appeare in the crystal faces of 100, 300 and 310 after 5 days and 7 days of crystallization at 138 ℃, the crystallinity is not high and the crystallization is not complete,the main structure of the products is amorphous. When the ratio of SiO2/Al2O3 is 20.20 and the crystallization temperature is 138-145 ℃,the crystallized of MCM-56 molecular sieve can be obtained,and the specific surface area of the synthesized sample is 307.6 m2/g under the condition of crystallization under 138 ℃ for 7 days.

Key words: molecular sieve, MCM-56 molecular sieve, low SiO2/Al2O3, specific surface area

CLC Number: 

  • O469
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