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Updated: Jan 15, 2026

Synthesis of Zeolites Using the ADOR Assembly-Disassembly-Organization-Reassembly Route

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Xerogeles Compuestos Basados en Ácido Polimetacrílico y Altas Concentraciones de Zeolita LTA: Investigaciones por RMN

Zoran Zujovic^1,2, Borivoj Adnadjevic³, Vesna Panic⁴

¹Institute for General and Physical Chemistry, Studentski Trg 12-16/V, Belgrade 11158, Serbia.

The journal of physical chemistry. B

|January 13, 2026

Abstract:

Enhanced Linde Type A (LTA) zeolite-poly(methacrylic acid) (PMAA) composites are synthesized by incorporating high concentrations of LTA zeolite (35-52 mass%) into the PMAA hydrogel network. PMAA, LTA zeolite-PMAA composites in xerogel structure, and LTA zeolite are investigated by ¹³C, ²⁷Al, and ²⁹Si solid-state NMR. The interactions between LTA zeolite and PMAA in the xerogel structure are confirmed. Regularly aligned acid dimers with the carboxylic acids hydrogen-bonded to each other in LTA zeolite-PMAA composites are revealed. The ²⁹Si MAS NMR reveals the prevalent tetrahedral coordination of silicon atoms in composites and the presence of the hydrogen-bearing amorphous species. The ²⁷Al MAS NMR spectra of LTA zeolite and composites confirm predominant tetrahedrally coordinated aluminum atoms in a typical LTA zeolite framework and the presence of extraframework octahedral aluminum in composites.

Palabras clave:

zeolita LTA ácido polimetacrílico PMAA xerogeles compuestos RMN de estado sólido interacciones moleculares dímeros ácidos

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