Issue |
E3S Web of Conf.
Volume 458, 2023
International Scientific Conference Energy Management of Municipal Facilities and Environmental Technologies (EMMFT-2023)
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Article Number | 02008 | |
Number of page(s) | 8 | |
Section | Material Physics and Chemistry, Carbon Footprint of Materials | |
DOI | https://doi.org/10.1051/e3sconf/202345802008 | |
Published online | 07 December 2023 |
Differential heats, isotherm and entropies of n-pentane adsorption on LiZSM-5 and CsZSM-5 zeolites
1 Tashkent University of Information Technologies named after Muhammad al-Khwarizmi, 108 Amir Temur Avenue, Uzbekistan
2 Namangan Institute of Engineering and Technology, 7 Kasansay Street, Uzbekistan
* Corresponding author: bakhronov@mail.ru
Artificially synthesised zeolites are widely used in water purification devices as adsorbents, ion exchangers, molecular sieves; they are used as electron donors and acceptors. Also, zeolites are currently the most important catalysts for the processing of various hydrocarbon raw materials. Synthetic zeolites ZSM-5 are highly efficient catalysts of these processes. For o characterisation of zeolite channels and estimation of sorption volume npentane are the most suitable. n-Pentane fills all sorption space and adsorbed with higher energy. This paper presents the results of the basic thermodynamic characteristics and isotherms of n-pentane adsorption in Cs3,17ZSM- 5 and Li3,37ZSM-5 zeolites at 303 K. A system consisting of a universal high-vacuum adsorption unit and a Tian-Calvet type differential modified microcalorimeter, DAC-1-1A, coupled to it was used to measure isotherms and differential heats of adsorption. The correlation between adsorption-energy characteristics was found and the molecular mechanism of n-pentane adsorption in CsZSM-5 and LiZSM-5 zeolites in the whole filling region was revealed.
© The Authors, published by EDP Sciences, 2023
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