Compressive properties of micro-spherical SiO2 particles

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Research units

  • Borealis Polymers Oy


Micron-sized, spherical SiO2 particles are important various industrial applications, such as in heterogeneous catalyst preparation. In particular, many of industrially relevant olefin polymerization catalysts are currently prepared using micro-spherical silica as catalyst support. In large-scale catalytic polyolefin production, the quality of the final product, as well as the process efficiency is crucially dependent on overall consistency, quality, physico-chemical properties of the catalyst. As the catalyst particle experiences various stresses during the polymer particle growth, mechanical properties of catalyst play a key role in its performance in the polymerization process. However, there is currently a lack of experimental mechanical property measurements of micron-sized, spherical SiO2 particles relevant for the polyolefin catalyst production.
In this work, compressive properties of commercial porous micro-spherical silicas were studied using a quasi-static micro-compression method. The method includes compressing single, micron-sized particles in controlled loading conditions. From the measurements, the compressive elastic-plastic properties of these particles can be determined.


Original languageEnglish
Title of host publicationTMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings
Publication statusE-pub ahead of print - 2020
MoE publication typeA4 Article in a conference publication
EventTMS Annual Meeting and Exhibition - San Diego, United States
Duration: 23 Feb 202027 Feb 2020
Conference number: 149


ConferenceTMS Annual Meeting and Exhibition
Abbreviated titleTMS
CountryUnited States
CitySan Diego
Internet address

    Research areas

  • Micro-compression, micro-spherical silica, catalysts

ID: 38075019