Synthese of Cancrinite from Alkali-Fused Fly Ash by “Dry Method”
In this study, zeolite was prepared from fused fly ash with very little water treatment. The as-prepared zeolite was characterized by X-ray diffraction (XRD) and scanning electron microscope. XRD results showed that cancrinite was the major phase in the product. The influence of preparation conditions on the yield of zeolite was described. Experiments showed that the crystallization time of zeolite became shorter and the crystallinity of cancrinite became higher with the increase of NaOH dose in fusion stage. Based on the fact that the water was not enough to be as the solvent which was different from conventional method, it can be concluded that the synthesis mechanism of zeolite from fused fly ash is the Solid-state Conversion Theory.
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Y. J. Zhao et al., "Synthese of Cancrinite from Alkali-Fused Fly Ash by “Dry Method”", Advanced Materials Research, Vols. 236-238, pp. 676-679, 2011