Study of Pseudoboehmite Synthesis by Sol-Gel Process
Study of Pseudoboehmite Synthesis by Sol-Gel Process
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溶胶-凝胶法合成拟薄水铝石的研究
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
G.N. Uehara
中科院分区：
文献类型：
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作者：
Antônio Hortêncio Munhoz Jr.;L. F. de Miranda;G.N. Uehara
以硝酸铝为前驱体，采用溶胶-凝胶法合成拟薄水铝石。采用2n完全析因设计研究了合成温度、氨水浓度和辐射剂量对溶胶-凝胶合成产物的影响。通过扫描电镜、X射线衍射（不同温度焙烧后）对合成产物进行了分析，并利用热重分析（TG）和差示扫描量热法（DSC）对产物的吸热和放热转变温度进行了分析。X射线衍射数据表明，在1100 ℃时得到α-氧化铝。
A pseudoboehmite was obtained by sol-gel synthesis using aluminum nitrate as precursor. It was used a 2n full factorial design for studying the effect of the temperature of synthesis, the concentration of ammonium hydroxide, and the radiation dose in the product of sol-gel synthesis. The product of the synthesis was analyzed by scanning electron microscopy, x-ray diffraction of the product (after firing the pseudoboehmite at different temperatures), and it was also analyzed the temperature of endothermic and exothermic transformations using the thermo gravimetric analysis (TG) and differential scanning calorimetry (DSC). The X-ray diffraction data show that α-alumina was obtained at 1100o C.