DIFFERENTIAL HEATS AND ENTROPY OF TOLUENE ADSORPTION ON ZEOLITE Cu2+ZSM-5
Article Sidebar
Main Article Content
Abstract
This article presents the results of differential heats and entropy of adsorption of toluene in CuZSM-5 zeolite. For measurements of isotherms and differential heat of adsorption, a system consisting of a universal high-vacuum adsorption unit and an attached differential modified Tian-Calve microcalorimeter DAC-1-1A was used to provide direct quantitative and qualitative characteristics of the nature and forces of adsorption interaction. The correlation between the adsorption-energy characteristics was found and the molecular mechanism of toluene adsorption in CuZSM-5 zeolite in the whole filling region was revealed. Toluene adsorbed in CuZSM-5 zeolite is located in the first coordination sphere with Cu2+ cation, forming two-dimensional complexes. It was found that the charge density significantly affects the mechanism, the energy of adsorption and the number of adsorbed molecules. It was determined that the average molar entropy of toluene adsorption in CuZSM-5 zeolite indicates that the mobility of toluene molecules in zeolite is below the liquid phase and close to that of the solid phase, indicating that the mobility of toluene molecules on cations is strongly inhibited.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
References
R. Eshmetov, D. Salikhanova, D. Jumaeva, I. Eshmetov, D. Sagdullaeva, J. Chemical Technology and Metallurgy, 57(4), (2022)
D. Jumaeva, O. Toirov, Z. Okhunjanov, U. Raximov, R. Akhrorova, J. of Chemical Technology and Metallurgythis, №58(2), (2023)
D. Jumayeva, I. Eshmatov, B. Jumabaev, A. Agzamkhodjayev, J. of Chemical Technology and Metallurgythis, №51 (2016)
D. Juraevna, U. R. Yunusjonovich, O. E. Karimovich, J. of Chemical Technology and Metallurgy, №57 (2022)
N. S. Khudayberganova, A. Rizaev, E. B. Abduraxmonov, Adsorption properties of benzene vapors on activated carbon from coke and asphalt (E3S Web of Conferences 264, 01022 (2021) CONMECHYDRO – 2021)
F. G. Rakhmatkarieva, O. K. Ergashev, O. Davlatova, M. X. Kokhkharov, M. Khudoyberganov, E. B. Abdurakhmonov, T. D. Abdulkhaev, NalTA energy in molecular sieve guest-guest interactions energetics of host-guest interactions in NalTA molecular electrics, Journal of Physics: Conference Series 2388 (2022) 012175. IOP Publishing APITECH-IV-2022
M. I. Karabayeva, S. R. Mirsalimova, D. S. Salixanova, S. V. Mamadaliyeva, S. S. Ortikova, Khimiya Rastitel'nogo Syr'yathis, №1(2022)
M. S. Khudoyberganov, F. G. Rakhmatkarieva, E. B. Abdurakhmonov, I. Tojiboeva, Kh. Tadjieva, Thermodynamics of Water Adsorption on Local Kaolin Modified Microporous Sorbents (AIP Conference Proceedings 2432, 2022)
А. Р. Каримова, А. Р. Давлетшин, Ю. А. Хамзин, М. У. Имашева, Башкирский химический журнал, Том 25, № 4 (2018)
N. Abdullayev, M. Kodirkhonov, O. Ergashev, I. Sapaev, Absorption of Ag+ ions on polymer membranes based on chitosan and Na- carboxymethylcellulose, International Conference on Problems and Perspectives of Modern Science (ICPPMS-2021), Tashkent, (AIP Conference Proceedings 2432, 2022)
Н. Абдуллаев, М. Қодирхонов, О. Эргашев, Научный журнал Universum: химия и биология, №10 (2021)
A. Chatterjee, T. Iwasaki, T. Ebina, H. Tsuruya, T. Kanougi, Y. Oumi, M. Kubo, A. Miyamoto, Appl. Surf. Sci., V.130-132 (1998).
Z. Wang, A. Mitra, H. Wang, L. Huang, Y. Yan, Adv. Mater., 13 (2001)
Z. Wang, A. Mitra, H. Wang, L. Huang, Y. Yan. Pure - silica zeolite low-k dielectric thin films, Adv. Mater., 13 (2001)
Ю. Тарасевич, В. Поляков, Х. Миначев, А. Пенчев, Кол. ж., T.55, №1 (1993)
Kh, Bakhronov, O. Ergashev, Kh. Kholmedov, A. Ganiev, M. Kokhkharov, N. Akhmedova, Adsorption of Carbon Dioxide in Zeolite LiZSM-5, International Conference on Problems and Perspectives of Modern Science (ICPPMS-2021), Tashkent, (AIP Conference Proceedings 2432, 2022)
Kh. Bakhronov, O. Ergashev, Kh. Karimov, T. Abdulkhaev, Y. Yakubov, A. Karimov, Thermodynamic Characteristics of Paraxylene Adsorption in LiZSM-5 and CsZSM-5 Zeolites, International Conference on Problems and Perspectives of Modern Science (ICPPMS-2021), Tashkent, (AIP Conference Proceedings 2432, 2022)
G. U. Rakhmatkariev, Mechanism of Adsorption of Water Vapor by Muscovite: A Model Based on Adsorption Calorimetry, Clays and Clay Minerals, 2006, vol. 54, pp. 423-430.
T. D. Аbdulxaev, Sh. А. Kuldasheva, Y. Yu. Yakubov, Regulations of differential entropies of water adsorption in zeolite NH4ZSM-5, XVIII international scientific and practical conference «International Scientific Review of the Problems and Prospects of Modern Science and Education» USA, Boston, November 20-21, 2019, № 10 (20). Р. 7-9
Й. Ю. Якубов, Ф. Г. Рахматкариева, Ф. Р. Сайдуллаев Адсорбция паров воды на цеолите НZSM-5, Композицион материаллар 2019, №4. - С. 76-79.
B. Boddenberg, G. U. Rakhmatkariev, J. Viets, Kh. N. Bakhronov, Statistical and thermodynamics of ammonia-alkali cation complexes in zeolite ZSM-5, Proceeding 12th International Zeolite Conference, Baltiore, USA, 5-10 July, 1998, pp.481-488.
B. Boddenberg, G. U. Rakhmatkariev, J. Viets, Kh. N. Bakhronov, Thermodynamics and statistical mechanics of ammonia in zeolite NaZSMS, Berichte der Bunsengesellschaft, Physical Chemistry Chemical Physicsthis link is disabled, 1998, 102(2), pp. 177–182.