Large-Porous Catalysts Consisting of Nanosized ZSM-5 Zeolite Crystals for n-Hexane Cracking Process
2021
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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