摘要
采用铝醇盐水热处理方法制备薄水铝石（Al2O3·xH2O）。研究了在100～180℃范围内水热处理温度对产物性能影响。XRD结果表明随水热处理温度升高，水合氧化铝由拟薄水铝石转变为结晶良好的薄水铝石，微观形貌从无规线团结构转变为菱形片层结构。由不同处理温度获得的TG曲线可计算出获得产物中含水量X在1．06～1．67。水热处理获得的薄水铝石经600℃焙烧获得γ-Al2O3，但其微观形貌不发生改变。
Boehmites （Al2O3 · xH2 O） has been prepared hydrothermally from aluminum alkoxide. Effect of temperature on preparation was studied in the range of 100～180℃. The X-ray diffraction （XRD） patterns indicate that transformation of pseudo-boehmite into well-crystallized boehmite will took place when the temperature is increase. The micro-morphologies also changed from irregular clew to cube thin flat plates. From the weight loss studies of the samples prepared at different temperatures, the value of x was estimated to vary between 1.06 and 1.67. γ-alumina will be obtained by subsequent calcination of boehmite at 600℃, but its morphology unchanged.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2007年第5期23-26,共4页
Nonferrous Metals（Extractive Metallurgy)
关键词
薄水铝石
水热
醇盐
微观结构
形貌
Boehmite
Hydrothermal
Alkoxide
Microstructural properties
Morphology
