Journal Articles Microporous and Mesoporous Materials Year : 2024

Exploring surface silanols in mesoporous Na-LTA zeolite to enhance its catalytic activity in Knoevenagel condensation by grafting amino groups

Abstract

Mesoporous Na-LTA zeolite was synthesized using the surfactant templating method with the organosilane surfactant [3-(trimethoxysilyl)propyl] octadecyldimethylammonium chloride (TPOAC). The formation of mesopores not only improved the accessibility of the basic catalytic sites but also led to the formation of isolated external silanols. These silanols were used to anchor propylamine groups by reacting with 3-aminopropyltrimethoxysilane (APTMS). The incorporation of propylamine groups in the mesoporous Na-LTA improved its catalytic activity in the Knoevenagel condensation reaction by 40% due to the presence of extra basic catalytic sites from amino groups. The combination of mesopore generation and functionalization is an efficient strategy for enhancing the performance of Na-LTA zeolite in this reaction.

Fichier principal
Vignette du fichier
376.pdf (807.77 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Licence

Dates and versions

hal-05142715 , version 1 (03-07-2025)

Licence

Identifiers

Cite

Juliana Floriano da Silva, Iago William Zapelini, Edilene Deise da Silva Ferracine, Svetlana Mintova, Dilson Cardoso. Exploring surface silanols in mesoporous Na-LTA zeolite to enhance its catalytic activity in Knoevenagel condensation by grafting amino groups. Microporous and Mesoporous Materials, 2024, 378, pp.113255. ⟨10.1016/j.micromeso.2024.113255⟩. ⟨hal-05142715⟩
78 View
117 Download

Altmetric

Share

  • More