Journal
PETROLEUM CHEMISTRY
Volume 61, Issue 8, Pages 908-915Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0965544121080132
Keywords
MWW zeolites; alkylation of benzene with propylene; recrystallization; hierarchical zeolite; post-synthetic modification
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Funding
- Russian Science Foundation [19-73-10160]
- Russian Science Foundation [19-73-10160] Funding Source: Russian Science Foundation
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The study found that different base types have a significant impact on the mesoporous structure of MWW zeolites, with cylindrical mesopores and slit-like pores affecting catalytic activity differently.
The effect of the base type [NaOH, tetramethylammonium hydroxide, and tetrapropylammonium hydroxide] and concentration (3-12 mmol/g) on the formation of mesopores during recrystallization of MWW zeolites was studied. It was shown that with NaOH, cylindrical mesopores are mainly formed, while with tetraalkylammonium hydroxides, slit-like pores. The effect of recrystallization on the catalytic activity of MWW zeolites in benzene alkylation with propylene was studied. It was shown that slit-like mesopores lead to an increase in activity, while cylindrical mesopores only slightly affect the catalytic properties.
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