Synthesis of Superfine Carbonate Form of Li-Al Double Hydroxide from Sodium Hydroaluminocarbonate
V. P. Isupov, L. E. Chupakhina, K. A. Tarasov, N. Y. Shestakova
Pages: 63-69
Abstract
The interaction of NaAl(OH)2CO3 · 0.2H2O (SHAC) with the aqueous solution of 5 M LiCl is investigated. It is shown that a complete transformation of SHAC and the formation of the carbonate form of the double lithium-aluminium hydroxide [LiAl2(OH)6]2CO3 · nH2O occur at a temperature of 90 oC and interaction time 6 h. The morphological and structural characteristics of the synthesized compound were investigated by means of XPA, high-resolution electron microscopy, and measurements of the specific surface. A scheme of the formation of double Li-Al hydroxide is proposed on the basis of the data of the physicochemical and chemical analyses of the products of SHAC interaction with the aqueous solutions of LiCl.
|
