SYNTHESIS AND CHARACTERIZATION OF THE LAMELLAR MICROCRYS- TALLINE ZINC PHOSPHATE α-Zn_3(PO_4)_2 · 4H_2O

摘要

Objective To study the structural and anticorrosive property of microcrystalline α -Zn_3 (PO_4)_2 · 4H_2O. Methods Zinc phosphate was prepared from zinc acetate and orthophosphate acid in aqueous solution. Structural characteristics of products were investigated by XRD, RAMAN, FTIR, TG-DTA, SEM, surface area, particle size distribution, and density measurements. Results The title compound, a highly crystalline, micronized and lamellar α-Zn_3 (PO_4)_2 · 4H_2O, has an orthorhombic monoclinic system , space group a_0 = 10. 597(A) ,b_0 = 18. 308 (A), c_0 = 5. 0304(A), V=975.86 A~3. Its specific area is 0. 701 m~2/g, density 3. 1612 g/m~3, and average size 4. 7 5 μm Conclusion Comparing with commercial Zinc phosphate, the synthesized lamellar microcrystalline zinc phosphate had excellent anticorrosive property and dispersibility.