Preparation of Small Particle Sized ZnAl-Hydrotalcite-Like Compounds by Ultrasonic Crystallization

• Published in: Journal of natural gas chemistry Vol. 15; no. 2; pp. 100 - 104
• Main Authors: Xie, Xianmei, Ren, Xiurong, Li, Jinping, Hu, Xiaojun, Wang, Zhizhong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-06-2006; College of Chemical Engineering & Technology, Taiyuan University of Technology, Taiyuan 030024, China
• Subjects: aluminium; particle size distribution; ultrasonic crystallization; zinc; 粒子粒度分布; 脱硫催化剂; 超声结晶化; 锌铝水滑石化合物; aluminium; particle size distribution; ultrasonic crystallization; zinc
• ISSN: 1003-9953
• DOI: 10.1016/S1003-9953(06)60015-7

Ultrasonic technology has been intensively studied recently due to its special features. In this paper, an ultrasonic crystallization method was introduced for the preparation of ZnAl-Hydrotalcite-Like compounds （ZnAl-HTLcs）. Samples with high crystallinity, small particle size and narrow particle size distribution were obtained and fully characterized using conventional techniques of XRD, FT-IR and TGDTA. The results prove that both ultrasonic frequency and ultrasonic power have effects on the sizes of the product particles. By varying the ultrasonic power from 250 W to 88 W, with the ultrasonic frequency fixed at 59 kHz, the median particle size of the samples increased from 0.37 μm to 0.82 μm. By altering the hydrothermal treatment time from 1 h to 5 h at 110 ℃, the median particle size of ZnAl-HTLcs synthesized via ultrasonic crystallization increased from 0.88 μm to 1.11 μm.