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October 1, 2025Catalysis TodayOpen Access

Topology-acidity-catalytic activity interplay in hierarchical nanolayered aluminosilicate zeolites for Friedel-Crafts alkylation

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Authors

АША. В. ШвецMKM. M. KurmachMMMichal Mazur

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Overview

Randomized trial examines catalytic activity in hierarchical nanolayered zeolites, suggesting topology influences performance.

Key Points

  • This study aims to explore the relationship between zeolite topology, acidity, and catalytic activity in alkylation reactions.
  • Synthesized nanolayered aluminosilicate zeolites with FER, MFI, MOR, and BEA topologies via hydrothermal crystallization using surfactants.
  • Conducted in situ FTIR-monitored thermodesorption of pyridines and 27 Al MAS NMR spectroscopy to analyze acid sites.
  • Evaluated catalytic performance in Friedel-Crafts alkylation of mesitylene with benzyl alcohol.
  • Surface Brønsted acid strengths were similar across zeolites, but the fraction of distorted tetrahedral Al sites varied by topology: MFI (21%) < FER (30%) < MOR (57%) < BEA (64%).
  • Catalytic activity increased with the concentration of surface-accessible Brønsted acid sites, with FER achieving the highest yield (37%) and selectivity (84%).
  • In BEA, high surface Brønsted acid site concentration did not correlate with catalytic activity, indicating complex dependence on topology.

Cite This Study

Швец et al. (2025) studied this question.

synapsesocial.com/papers/6a2091ef3f9b8cb80cc64628https://doi.org/10.1016/j.cattod.2025.115580
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