Interpretation of mercury porosimetry applied to aerogels
Source abstract
Abstract
The observation of aerogels submitted to a pressure of mercury indicates that this porous material is compacted and not intruded by the mercury. Consequently, the classical Washburn equation cannot be applied. A relation is established between the pressure P of compaction and the size L of the largest pores. The size of pores is estimated by using the nitrogen adsorption-desorption isotherms analysis and SEM measurements. A relation is found in which P is proportional to L−4 The new relation is applied to mercury porosimetry. Finally, a mechanical model is proposed that reproduces successfully the behavior of aerogels under high pressure of mercury.
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Research context
OpenAlex topics: Aerogels and thermal insulation · Surface Modification and Superhydrophobicity · Inorganic Fluorides and Related Compounds
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References (8)
Show source-provided references
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