Hydrothermal synthesis of ka (lta-type) zeolite from angren kaolin: structural, morphological, and adsorption characterization

Mukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, Oydinov, Mukhlis

Наманган муҳандислик­технология институти илмий­техника журнали · 2026-yil

Annotatsiya

This study explores Angren kaolin as a low-cost local raw material for the synthesis of KA zeolite (LTA-type). A multi-step activation process using oxalic acid was applied to remove impurities and enhance reactivity. Hydrothermal synthesis yielded highly crystalline KA zeolite, whose structural and adsorption properties were thoroughly investigated. XRD analysis confirmed the formation of an ordered crystalline lattice, while FTIR spectra revealed characteristic Si–O–Si and Al–O vibrations and the presence of double four-ring (D4R) units typical of LTA-type zeolites. BET and DFT analyses demonstrated a well-developed porous structure and strong adsorption capacity: BET surface area was 8.475 m²/g, DFT surface area 19.575 m²/g, maximum adsorption volume 149.00 cc/g, and average pore diameter 121.955 Å. These findings confirm the high hydrophilicity and efficiency of KA zeolite as an adsorbent. The study provides a scientific basis for utilizing Angren kaolin in zeolite synthesis and highlights the strategic importance of local resources for future industrial-scale applications.

Maqola ma’lumotlari
MualliflarMukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, Oydinov, Mukhlis
JurnalНаманган муҳандислик­технология институти илмий­техника журнали
NashriyotНаманган муҳандислик-технология институти
ISSN2181-8622, 1682-8658
Nashr sanasi2026-03-30
Jild11
Son1
Betlar117-127
TilIngliz
Ilmiy sohaKimyo
DOI10.61151/stjniet.v11i1.994
Indeksga qo‘shilgan2026-08-26

DOI: 10.61151/stjniet.v11i1.994 · Maqolaning asl sahifasi

Kalit so‘zlar

Kaolin, porous materials, zeolite, spectroscopy, hydrothermal method, crystal, X-ray, diffraction

Ilmiy soha

Kimyo

Iqtibos keltirish

APAMukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, & Oydinov, Mukhlis (2026). HYDROTHERMAL SYNTHESIS OF KA (LTA-TYPE) ZEOLITE FROM ANGREN KAOLIN: STRUCTURAL, MORPHOLOGICAL, AND ADSORPTION CHARACTERIZATION. Наманган муҳандислик­технология институти илмий­техника журнали, 11(1), 117-127. https://doi.org/10.61151/stjniet.v11i1.994
GOST (OAK)Mukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, Oydinov, Mukhlis HYDROTHERMAL SYNTHESIS OF KA (LTA-TYPE) ZEOLITE FROM ANGREN KAOLIN: STRUCTURAL, MORPHOLOGICAL, AND ADSORPTION CHARACTERIZATION // Наманган муҳандислик­технология институти илмий­техника журнали. – 2026. – T. 11, № 1. – P. 117-127. – DOI: 10.61151/stjniet.v11i1.994.
MLAMukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, and Oydinov, Mukhlis. “HYDROTHERMAL SYNTHESIS OF KA (LTA-TYPE) ZEOLITE FROM ANGREN KAOLIN: STRUCTURAL, MORPHOLOGICAL, AND ADSORPTION CHARACTERIZATION.” Наманган муҳандислик­технология институти илмий­техника журнали, 11(1), 117-127, 2026. https://doi.org/10.61151/stjniet.v11i1.994
ChicagoMukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, and Oydinov, Mukhlis. “HYDROTHERMAL SYNTHESIS OF KA (LTA-TYPE) ZEOLITE FROM ANGREN KAOLIN: STRUCTURAL, MORPHOLOGICAL, AND ADSORPTION CHARACTERIZATION.” Наманган муҳандислик­технология институти илмий­техника журнали, 11(1), 117-127 (2026). https://doi.org/10.61151/stjniet.v11i1.994
HarvardMukhammadjonov, Mirjalol, Rakhmatkarieva, Firuza, and Oydinov, Mukhlis (2026) ‘HYDROTHERMAL SYNTHESIS OF KA (LTA-TYPE) ZEOLITE FROM ANGREN KAOLIN: STRUCTURAL, MORPHOLOGICAL, AND ADSORPTION CHARACTERIZATION’, Наманган муҳандислик­технология институти илмий­техника журнали, 11(1), 117-127. https://doi.org/10.61151/stjniet.v11i1.994
BibTeX
@article{mukhammadjonovmirjalol2026,
  title = {HYDROTHERMAL SYNTHESIS OF KA (LTA-TYPE) ZEOLITE FROM ANGREN KAOLIN: STRUCTURAL, MORPHOLOGICAL, AND ADSORPTION CHARACTERIZATION},
  author = {Mukhammadjonov, Mirjalol and Rakhmatkarieva, Firuza and Oydinov, Mukhlis},
  journal = {Наманган муҳандислик­технология институти илмий­техника журнали},
  year = {2026},
  volume = {11},
  number = {1},
  pages = {117-127},
  doi = {10.61151/stjniet.v11i1.994},
  url = {https://doi.org/10.61151/stjniet.v11i1.994}
}

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