ADSORBTION OF HEPTANE MOLECULES BY HYBRID BIONANOCOMPOSITE DIACETATECELLULOSE-SILICA
Downloads
Isotherms of adsorption of heptane molecules at 303 K on hybrid bionanocomposite diacetatecellulose-silica (DAC-silica) have been investigated. Isotherm of adsorption can be described by three-member equation of theory of volume filling of microspores from the initial part before filling. It was determined that differentional heat of adsorption on n-heptane molecules on DAC-silica nanocomposite is stepped and at this interaction adsorbent-adsorbate has carried out with evaluation heat 94 kJ/mol and at quantity of adsorbate more than 0,5 mmol/g interaction adsorbate-adsorbate has been observed, adsorption can be described as polymolecular. On the base of curve of differentional molar entropy has been shown that molecules of n-heptane are in solid state in adsorbent before 0,55 mmol/g.
2. S. Sequeira, D.V. Evtuguin, I. Portugal. Cellulose-Silica Hybrid Materials Obtained by Heteropolyacid Catalyzed Sol-Gel Synthesis // Materials, Chemicals, and Energy from Forest Biomass. -2007. -V. 954.(8). -P. 121-136.
3. Inês Portugal, Vânia M. Dias, Rui F. Duarte, Dmitry V. Evtuguin. Hydration of Cellulose-Silica Hybrids Assessed by Sorption Isotherms// J. Phys. Chem. B. -2010. -V. 114(11). -P. 4047-4055.
4. Sequeira, S; Evtuguin, DV; Portugal, I. preparation and properties of cellulose-silica hybrid composites // Journal of Polymer Composites. -2009. -V.30(9). -P. 1275-1282.
5. Yurii A. Shchipunov, Tatʼyana Yu. Karpenko Hybrid Polysaccharide-Silica Nanocomposites Prepared by the Sol−Gel Technique // J. Langmuir. -2004. -V. 20(10). -P. 3882-3887.
6. Yury Shchipunov, Irina Postnova. Cellulose Mineralization as a Route for Novel Functional Materials // Advanced functional Materials. -2018. -V. 28(27). -P. 176-203.
7. Clement Sanchez, Beatriz Julia´n, Philippe Belleville and Michael Popall. Applications of hybrid organic–inorganic nanocomposites // J. Mater. Chem. -2005. -V. 15. -P. 3559–3592.
8. А.И. Суворова, А.Л. Суворов, М.В. Иваненко, Е.И. Шишкин. Нанокомпозитные мембранные пленки на основе эфиров целлюлозы и тетраэтоксисилана // Нанотехнологии в России. -2009. -Т.4. -№1–2. -C. 102-108.
9. A. Yarkulov, B. Umarov, F. Rakhmatkarieva, N. Kattaev, Kh. Akbarov, E. Berdimurodov. Diacetate Cellulose-Silicon Bionanocomposite Adsorbent for recovery of Heavy Metal ions and Benzene Vapours: An Experimental and Theoretical Investigation// Biointerface Research in Applied Chemistry- Open-Access Journal (ISSN: 2069-5837). –2022, –V. 12(3), –P. 2862-2880
10. Яркулов А.Ю., Сагдуллаев Б.У., Акбаров Х.И. Термодинамика адсорбции молекулы н-гептана гибридным бионанокомпозитом диацетатцеллюлоза-кремнезем//Universum: химия и биология:электрон. научн. журн. 2024. 1(115). URL: https://7universum.com/ru/nature/archive/item/16610
11. A.Yu. Yarkulov, B.U. Sagdullayev, B.S. Umarov, F.G. Rakhmatkariyeva, Kh.I. Akbarov. Precision Adsorption–Calorimetric Investigations Of Thermodynamic Properties Of Hybrid Nanocompositions Of Diacetate Cellulose–Silica // International Journal of Advanced Science and Technology –2020, –V. 29(12), –P. 2936-2943
12. А.Ю. Яркулов. Термодинамические свойства гибридных диацетат целлюлозы кремнеземных нанокомпозиций. СамГУ илмий ахборотнома. Самарқанд 2020. 3-сон (121) – С. 50-54.
.jpg)
1.png)
