Compressive Properties of Micro-spherical SiO2 Particles

Niko Hellstén, Antti J. Karttunen, Charlotta Engblom, Alexander Reznichenko, Erika Rantala

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

Abstract

Micron-sized, spherical SiO2 particles are important in 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, and 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, TMS 2020
EditorsBowen Li, Shefford P. Baker, Huazhang Zhai, Sergio Neves Monteiro, Rajiv Soman, Faqin Dong, Jinhong Li, Ruigang Wang
PublisherSpringer
Pages57-66
Number of pages10
ISBN (Electronic)978-3-030-36552-3
ISBN (Print)978-3-030-36551-6
DOIs
Publication statusPublished - 2020
MoE publication typeA4 Article in a conference publication
EventSymposium on Advances in Powder and Ceramic Material Science held at the 149th Annual Meeting and Exhibition, TMS 2020 - San Diego, United States
Duration: 23 Feb 202027 Feb 2020

Publication series

SeriesMinerals, Metals and Materials Series
ISSN2367-1181

Conference

ConferenceSymposium on Advances in Powder and Ceramic Material Science held at the 149th Annual Meeting and Exhibition, TMS 2020
CountryUnited States
CitySan Diego
Period23/02/2027/02/20

Keywords

  • Catalysts
  • Micro-compression
  • Micro-spherical silica

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