Zeolite from fly ash: synthesis and characterization

Bulletin of materials science

Narayan C Pradhan¹  Keka Ojha¹  Amar Nath Samanta¹ 

[1] Department of Chemical Engineering, Indian Institute of Technology, Kharagpur 721 302, India$$Department of Chemical Engineering, Indian Institute of Technology, Kharagpur 721 302, IndiaDepartment of Chemical Engineering, Indian Institute of Technology, Kharagpur 721 302, India$$

关键词: Fly ash;    NaX zeolite;    hydrothermal treatment;    X-ray diffraction;    scanning electron microscopy;    BET surface area.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Coal fly ash was used to synthesize X-type zeolite by alkali fusion followed by hydrothermal treatment. The synthesized zeolite was characterized using various techniques such as X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, BET method for surface area measurement etc. The synthesis conditions were optimized to obtain highly crystalline zeolite with maximum BET surface area. The maximum surface area of the product was found to be 383 m²/g with high purity. The crystallinity of the prepared zeolite was found to change with fusion temperature and a maximum value was obtained at 823 K. The cost of synthesized zeolite was estimated to be almost one-fifth of that of commercial 13X zeolite available in the market.

【 授权许可】

Unknown