Compressive Properties of Micro-spherical SiO2 Particles
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A4 Artikkeli konferenssijulkaisussa
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Date
2020
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Mcode
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Language
en
Pages
57-66
Series
Advances in Powder and Ceramic Materials Science, The Minerals, Metals & Materials Series
Abstract
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.Description
Keywords
Micro-compression, micro-spherical silica, catalysts
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Citation
Hellsten, N, Karttunen, A, Engblom, C, Reznichenko, A & Rantala, E 2020, Compressive Properties of Micro-spherical SiO2 Particles . in Advances in Powder and Ceramic Materials Science . The Minerals, Metals & Materials Series, Springer, pp. 57-66, TMS Annual Meeting and Exhibition, San Diego, California, United States, 23/02/2020 . https://doi.org/10.1007/978-3-030-36552-3