Compressive Properties of Micro-spherical SiO2 Particles

Niko Hellsten, Antti Karttunen, Charlotta Engblom, Alexander Reznichenko, Erika Rantala

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

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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 publicationAdvances in Powder and Ceramic Materials Science
ISBN (Electronic)978-3-030-36552-3
ISBN (Print)978-3-030-36551-6
Publication statusPublished - 2020
MoE publication typeA4 Conference publication
EventTMS Annual Meeting and Exhibition - San Diego, United States
Duration: 23 Feb 202027 Feb 2020
Conference number: 149

Publication series

NameThe Minerals, Metals & Materials Series
PublisherSpringer International Publishing
ISSN (Print)2367-1181


ConferenceTMS Annual Meeting and Exhibition
Abbreviated titleTMS
Country/TerritoryUnited States
CitySan Diego
Internet address


  • Micro-compression
  • micro-spherical silica
  • catalysts


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