SOL-GEL PROCESSING OF SILICA .2. THE ROLE OF THE CATALYST
SOL-GEL PROCESSING OF SILICA .2. THE ROLE OF THE CATALYST
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DOI：
10.1016/s0022-3093(86)80078-3
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发表时间：
1986-10-01
影响因子：
3.5
通讯作者：
MACKENZIE, JD
中科院分区：
文献类型：
--
作者：
POPE, EJA;MACKENZIE, JD
在二氧化硅的溶胶-凝胶合成中，使用含硅原料、溶剂、水和催化剂。通过改变催化剂，观察到对凝胶化时间、孔隙率、堆积密度和表观密度以及干燥时的体积收缩率的显著影响。例如，对于干燥和烧制的凝胶，可以获得2%至68%的孔隙率。催化机理已被提出的催化剂考虑。
In the sol-gel synthesis of silica, a silicon-containing raw material, a solvent, water, and a catalyst are utilized. By varying the catalyst, dramatic effects on gelation time, porosity, bulk and apparent density, and volume shrinkage on drying were observed. For example, porosities ranging from two to sixty-eight per cent can be obtained for dried and fired gels. Mechanisms for catalysis have been proposed for the catalysts considered.