The effectiveness of attrition milling in producing high-specific-surface materials that would be effective adsorbents is described. Silica was selected as the test material, and adsorption of n-hexane on the attrition-ground material was compared with adsorption on two commercial silica adsorbents. Attrition milling offers a new approach to the manufacture of high-surface-area solids for use as adsorbents and has the potential of providing high-surface-area materials that have not been available previously. Certain substances that cannot be chemically precipitated to form high-specific-area materials can be milled to a size that achieves the desired surface.
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