Abstract
The paper reports the preparation of two series of nanosized (150–350 nm) ZSM-5 zeolite crystals with a Si/Al molar ratio of 70 to 144 by a template method. The prepared catalysts are distinctive in their mostly intercrystalline macroporosity and random architecture of transport channels formed as a result of the utilization of a high-molecular-weight template represented by suspended or powdered polystyrene particles about 250 nm in size. The crystallinity and the size and packing of the particles depend on the method of template introduction into a precursor mixture. The samples of both series were tested in an n-hexane cracking reaction, and the comparative assessment of their catalytic properties in terms of n-hexane conversion degree and selectivity for alkane, olefin, and isoalkane products is also summarized in the paper.
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ACKNOWLEDGMENTS
The reported study was performed within the framework of the state assignment for BIC SB RAS. The authors are grateful to the following researchers of BIC SB RAS: T.A. Alekseeva for conducting XRD, N.A. Rudina for recording SEM images, A.A. Leonova for conducting textural experiments, and A.A. Pochtar for chemical analysis of the samples.
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Translated from Sovremennye Molekulyarnye Sita. Advanced Molecular Sieves, 2021, Vol. 3, No. 1, pp. 85–93.
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Vorobyeva, E.E., Sladkovskiy, D.A., Lysikov, A.I. et al. Large-Porous Catalysts Consisting of Nanosized ZSM-5 Zeolite Crystals for n-Hexane Cracking Process. Pet. Chem. 61, 332–340 (2021). https://doi.org/10.1134/S0965544121030014
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DOI: https://doi.org/10.1134/S0965544121030014