Mesoporous SSZ-13 synthesis via accelerated hydrolysis and condensation of tetraethyl orthosilicate

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2020-09-15

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İpek Torun, Bahar

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SSZ-13 is a small pore zeolite having a chabazite (CHA) framework having eightmembered-ring (8MR) pore openings (3.8 Å × 3.8 Å). Due to its superior hydrothermal stability [1] and high activity, SSZ-13 is employed several reactions such as selective catalytic reduction (SCR) reaction [2,3], methylamine synthesis [4], methanol to dimethyl ether [5], methanol to olefin [6], ethanol to olefin [7], methane to methanol [8,9] conversion reactions. However, in complex reaction systems such as methanol to olefin production, the fast buildup of carbonaceous species in the small cages shortens the lifetime of SSZ-13 and motivates research for production of mesoporous SSZ-13. There have been an increasing number of reports for the last 10 years for mesopore addition to SSZ-13 including bottom-up and top-down approaches such as crystallization control [10] and mesoporogen addition techniques [11] or desilication approach [12,13]. Majority of the reports for mesoporous SSZ-13 synthesis aims improved mass transfer kinetics and enhanced lifetime in methanol to olefin reaction [14,15]. Here, we investigate the mesopore and crystal size effect on the secondary reactions in direct methane conversion to methanol in continuous processes by synthesizing mesoporous SSZ-13 using accelerated hydrolysis and condensation of TEOS.

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https://hdl.handle.net/11511/73029

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2020 EFCATS Summer School (15-19 Eylül 2020)

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Unverified, Conference / Seminar

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Citation Formats

B. İpek Torun, “Mesoporous SSZ-13 synthesis via accelerated hydrolysis and condensation of tetraethyl orthosilicate,” presented at the 2020 EFCATS Summer School (15-19 Eylül 2020), Piran, Slovenya, 2020, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73029.