Mercury Intrusion Porosimetry for Pore Analysis

Mercury PSD measurements^{20 (link)} were carried out using a Micromeritics Autopore IV 9520 unit. The sample was pre-treated at 200 °C for 15 min, then at 540 °C for 1 h. About 0.5 g of the sample was loaded into a 3 ml powder penetrometer. The mercury intrusion pressure was increased in a stepwise manner from 0.1 to 60,000 psi. The volume of mercury intruded after each step is measured and recorded. Acknowledging the unreliability of MIP regarding the analysis of pores with irregular shapes^{49 (link)}, the pore diameter was calculated using the Washburn equation with a contact angle of 140°^{50 (link)}.

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Ihli J., Jacob R.R., Holler M., Guizar-Sicairos M., Diaz A., da Silva J.C., Ferreira Sanchez D., Krumeich F., Grolimund D., Taddei M., Cheng W.C., Shu Y., Menzel A, & van Bokhoven J.A. (2017). A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts. Nature Communications, 8, 809.

Publication 2017

Autopore IV 9520 unit

Mercury Powder Pressure

Corresponding Organization :

Other organizations : Paul Scherrer Institute, Institute for Biomedical Engineering

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Variable analysis

independent variables

Mercury intrusion pressure
Pre-treatment temperature and duration

dependent variables

Volume of mercury intruded

control variables

Sample mass (approximately 0.5 g)
Penetrometer volume (3 ml)
Contact angle (140°)

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