【摘 要】
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In the process of synthesis of nanometer SiC precursors with sol-gel of SiO2 and lignin , the products of all sizes required can be controlled by the concentra
【出 处】
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China\'s Refractories
论文部分内容阅读
In the process of synthesis of nanometer SiC precursors with sol-gel of SiO2 and lignin , the products of all sizes required can be controlled by the concentration of reac-tants , pH, temperature , reaction and ageing time , and so on . The best conditions in this research are : the concentration of Na2SiO3 and organic matters are 4. 50% and 26.4% respectively, pH = 3.3 , T = 65℃ , ageing time is 30min , dried at 150℃ , the size of SiC precursors is about 2.0μm .
In the process of synthesis of nanometer SiC precursors with sol-gel of SiO2 and lignin, the products of all sizes can be controlled by the concentration of reac-tants, pH, temperature, reaction and aging time, and so on. The best conditions in this research are: concentration of Na2SiO3 and organic matters are 4.50% and 26.4% respectively, pH = 3.3, T = 65 ° C, aging time is 30min, dried at 150 ° C, the size of SiC precursors is about 2.0 μm.
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