DIFFERENTIAL HEAT OF ADSORPTION OF AMMONIA ON LTA CEOLITE

Authors

  • Bazarbayev M. Head of the Department of Biomedical Engineering, Informatics and Biophysics, Tashkent Medical Academy, Candidate of Physical and Mathematical Sciences, Associate Professor Author
  • Juraeva Z. Assistant of the Department of Biomedical Engineering, Informatics and Biophysics, Tashkent Medical Academy Author
  • Mamadaliev U. Independent Researcher, Namangan Engineering-Technological Institute Author

Keywords:

adsorption, heat, enthalpy, thermodynamics, microcalorimeter, ammonia, adsorption mechanism, cation, sodium, calcium.

Abstract

This paper presents the results of differential heat of adsorption of ammonia in Ca5Na3A zeolite (MSS-624) at a constant temperature of 303 K. A system consisting of a universal high-vacuum adsorption unit coupled to a Tiana-Calvet type differential microcalorimeter, DAK-1-1A, was used to measure the differential heat of adsorption. A correlation between adsorption-energy characteristics was found, and the molecular mechanism of ammonia adsorption in Ca5Na3A zeolite (MSS-624) in the whole filling region was also revealed. A stepwise change in the differential heat of adsorption depending on the amount of Na+ and Ca2+ cations in the zeolite has been established. Ammonia molecules initially form tetrameric ion-molecular complexes 4NH3:Na+ in the first coordination sphere with sodium cations and monomeric ion-molecular complexes 2NH3:Ca2+ with calcium cations

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Published

2025-03-01

Issue

2025: ICDE -INDIA -FEB

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

DIFFERENTIAL HEAT OF ADSORPTION OF AMMONIA ON LTA CEOLITE. (2025). Innovate Conferences, 11-15. https://innovateconferences.org/index.php/ic/article/view/27

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