Diphasic xerogels, a new class of materials: phases in the system al2o3-sio2
Diphasic xerogels, a new class of materials: phases in the system al2o3-sio2
复制标题
DOI：
10.1111/j.1151-2916.1984.tb19636.x
复制
发表时间：
2006-10
影响因子：
3.9
通讯作者：
D. Hoffman;R. Roy;S. Komarneni
中科院分区：
文献类型：
--
作者：
D. Hoffman;R. Roy;S. Komarneni
以Al_2O_3-SiO_2体系中的有机和无机前驱体为原料，制备了两个系列的干凝胶(干凝胶)，一个由单相组成，另一个由两相组成。利用差热分析、粉末X-射线衍射仪和带式加热炉超快加热等手段研究了干凝胶粉末中纳米结构的差异对其能量含量和加热行为的影响。结果表明，双相干凝胶是与相同组成的单相干凝胶本质上不同的材料。
Two series of xerogels (desiccated hydrogels), one consisting of single phases and the other of two phases, were prepared from organic and inorganic precursors in the system Al2o3-Sio2. The effect of these nanostructural differences in the xerogel powders on the energy content and behavior on heating were studied using DTA, powder X-ray diffraction, and ultrafast heating on a strip furnace. The results demonstrate that diphasic xerogels are substantially different materials from single-phase xerogels of the same composition.