Inorganic Chemicals Industry ›› 2022, Vol. 54 ›› Issue (5): 96-100.doi: 10.19964/j.issn.1006-4990.2021-0477

• Environment·Health·Safety • Previous Articles     Next Articles

Research on performance of hydrothermally synthesized zeolite with fly ash from different producing areas

CUI Jiaxin1(),WANG Lianyong1,2(),LU Simeng3,SUN Yanwen1,WANG Rui1,HE Yan1,HAN Jianli1   

  1. 1.School of Metallurgy,Northeastern University,Shenyang 110819,China
    2.State Environmental Protection Key Laboratory of Eco-Industry
    3.School of Energy and Power Engineering,Changchun Institute of Technology
  • Received:2021-08-05 Online:2022-05-10 Published:2022-05-31
  • Contact: WANG Lianyong E-mail:cjxneu@163.com;wlyneu@126.com

Abstract:

There are many methods for synthesizing zeolite with fly ash.Among them,hydrothermal synthesis of zeolite is recognized as the most feasible means to commercialize fly ash?based zeolite due to its simple operation and lowest energy consumption.Several kinds of fly ash from different origins at home and abroad were synthesized by hydrothermal method,and the synthesized zeolite products were characterized by XRD,XRF,TG-DTA,SEM,etc and the quality difference of zeolite synthesized from different fly ash was investigated under the same hydrothermal synthesis parameters.The XRD pattern showed that about 80% to 90% of the ingredients in the raw material were converted into zeolite,and the main crystal type of zeolite was Na-P1 type,and there was also a small amount of A type;XRF analysis showed that the silica?aluminum molar ratios of the three fly ash?based zeolites were 1.61,1.35 and 1.45,respectively,in line with the analysis conclusion of the XRD pattern.TG-DTA showed that the synthetic zeolite had almost no quality loss above 500 ℃ and had good thermal stability.The SEM images showed that the synthetic zeolite was non?spherical,and the surface texture could increase the specific surface area of the zeolite,and the crystal state was good.The entire experimental process was simple,low?cost,and high?quality synthetic zeolite samples,which showed that the fly ash hydrothermal method had great commercialization potential for obtaining zeolite products.

Key words: fly ash, hydrothermal, zeolite, performance characterization

CLC Number: