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二氧化硅颗粒物表征
Characterization of the silica particles
| Size and distribution (nm) (Mean±SD) | Surface area (m2/g) | Metal impurity (dominant elements) | |
| The size, surface area were determined by Laser particle size analyzer and BET surface area analyzer, and the impurity mental elements by EDX. | |||
| Silica (naturally occurring) | 54±27 | 87.06 | Ca, Fe, Al, Mn |
| Silica (industrially produced) | 50±12 | 55.27 | Na, Ca, Fe, Al |
| Silica (crystalline; Min-U-Sil5) | 580±231 | 5.20 | Ca, Fe, K, Al |
