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US5776240A Granules based on pyrogenically prepared silicon dioxide, methods for their preparation and use thereof 失效
基于热解法制备的二氧化硅的颗粒,其制备方法和用途

Granules based on pyrogenically prepared silicon dioxide, methods for
their preparation and use thereof
摘要:
Granules based on silicon dioxide and having the properties: Average particle size: 10 to 120 .mu.m BET surface area: 40 to 400 m.sup.2 /g Pore volume: 0.5 to 2.5 ml/g Pore size distribution: less than 5% of the total pore volume exists of pores with a diameter
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