Selective Synthesis of γ-WO3 and β-WO3⋅H2O by the Hydrothermal Treatment of Peroxotungstic Acid
作者:T. M. Bushkova、A. A. Egorova、A. V. Khoroshilov、O. S. Ivanova、A. D. Yapryntsev、A. E. Baranchikov、V. K. Ivanov
DOI:10.1134/s0036023621040070
日期:2021.4
Abstract A selective method has been suggested for the synthesis of highly dispersed powders of γ-WO3 (monoclinic) and β-WO3⋅H2O (orthorhombic) by the hydrothermal treatment of aqueous suspensions of peroxotungstic acid in temperature range 70–250°С. The hydrothermal treatment of suspensions of peroxotungstic acid leads to formation of monophase β-WO3⋅H2O at temperature up to 100°С and monophase γ-WO3
摘要 选择性方法已被建议用于的高度分散的粉末的合成γ-WO 3(单斜晶)和β-WO 3 ⋅H 2 O(斜方)由peroxotungstic酸的水悬浮液的温度在70-250范围内的水热处理° С. peroxotungstic酸引线的悬浮液,以形成所述的水热处理单相β-WO 3 ⋅H 2 O不连到温度高达100°С和单相γ-WO 3在250℃С。的温度范围内120-200°С热液处理给出了γ-WO两相的样品3和β-WO 3 ⋅0.33H 2O(斜方晶系同义词)。通过X射线粉末衍射,扫描电子显微镜,IR光谱,热分析和漫反射光谱研究了所获得的单相和两相粉末。