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Received December 11, 2021
Accepted March 2, 2022
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Effect of the physicochemical properties of SiO2 on performance of supported metallocene catalyst
Department of Chemical Engineering, Kongju National University, 1223-24 Cheonan-daero, Seobuk-gu, Cheonan 31080, Korea
Korean Journal of Chemical Engineering, July 2022, 39(7), 1762-1767(6), 10.1007/s11814-022-1097-0
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Abstract
The effect of the calcination temperature of SiO2 on ethylene polymerization behavior was studied with supported metallocene catalysts. The concentration of hydroxyl group on the SiO2 surface was measured through FTIR, thermogravimetry, and trimethylaluminium titration method. In addition, physical properties such as particle morphology, surface area, and pore characteristics were analyzed through BET, and SEM. (n-BuMeCp)2ZrCl2 was supported on the SiO2, which was calcined at different temperatures in the range of 100 and 900℃. The resulting supported catalyst was applied to ethylene homopolymerization and ethylene-1-hexene copolymerization at 80℃ and 20 bar, showing that the lower calcination temperature resulted in higher activity due to the larger Zr and Al loadings.
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Cariño AC, Park SJ, Ko YS, Appl. Chem. Eng., 29(4), 461 (2018)
Lee SY, Ko YS, J. Nanosci. Nanotechnol., 13(6), 4401 (2013)
Lee JS, Ko YS, J. Mol. Catal. A-Chem., 386, 120 (2014)
Encarnacion JD, Park SJ, Ko YS, Korean J. Chem. Eng., 37(2), 380 (2020)
Celedonio J, Lee JS, Ko YS, Appl. Chem. Eng., 25(4), 396 (2014)
Ko YS, Lee JS, Yim JH, Jeon JK, Jung KY, J. Nanosci. Nanotechnol., 10(1), 180 (2010)
Zheng X, Smit M, Chadwick JC, Loos J, Macromolecules, 38(11), 4673 (2005)
Ek S, Root A, Peussa M, Niinistö L, Thermochim. Acta, 379(1-2), 201 (2001)
Albunia AR, Parades F, Jeremic D, Multimodal polymers with supported catalysts, Springer, New York (2019).
Van Grieken R, Calleja G, Serrano D, Martos C, Polym. React. Eng., 11(1), 17 (2003)
Atiqullah M, Akhtar MN, Moman AA, Abu-Raqabah AH, Palackal SJ, Al-Muallem HA, Hamed OM, Appl. Catal. A: Gen., 320, 134 (2007)
Bashir MA, Vancompernolle T, Gauvin R, Delevoye L, Merle N, Monteil V, Taoufik M, McKenna TFL, Boisson C, Catal. Sci. Technol., 6(9), 2962 (2016)
Mueller R, Kammler HK, Wegner K, Pratsinis SE, Langmuir, 19(1), 160 (2003)
Gallas JP, Goupil JA, Vimont A, Lavalley JC, Gil B, Gilson JP, Miserque O, Langmuir, 25(10), 5825 (2009)
Armistead CG, Tyler AJ, Hambleton FH, Mitchell SA, Hockey JA, J. Phys. Chem., 73(11), 3947 (1969)
