Freundlich, Langmuir, Temkin and Harkins-Jura Isotherms Studies of H2 Adsorption on Porous Adsorbents

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dc.citation.epage135
dc.citation.issue2
dc.citation.spage129
dc.contributor.affiliationKocaeli University
dc.contributor.authorErdogan, Fatma Oguz
dc.coverage.placenameЛьвів
dc.coverage.placenameLviv
dc.date.accessioned2020-03-02T12:28:04Z
dc.date.available2020-03-02T12:28:04Z
dc.date.created2019-02-28
dc.date.issued2019-02-28
dc.description.abstractВивчено ізотерми адсорбції та десорбції водню для багатошарової карбонової нанотрубки (MWCNT), багатошарової карбонової нанотрубки модифікованої залізом (Fe_MWCNT), двох цеолітів (Na_Y_Zeo і NH4-Y_Zeo) та MCM- 41 за температури 77 К і атмосферного тиску. Адсорбційні характеристики оцінено декількома ізотермічними рів- няннями, такими як моделі Ленгмюра, Фрейндліха, Темкіна та Гаркінса-Юри. Визначено, що ізотерма Фрейндліха найбільш повно описує процес, оскільки має найвищу кореляцію. Вста- новлено, що масова кількість адсорбованого водню залежить від об'єму мікропори зразка, крім MWCNT та Fe_MWCNT. Характеристику пористих зразків визначено за допомогою скануючої електронної мікроскопії та ізотерм адсорбції N2.Визначено, що максимальний запас водню 1,96 мас. % досягається за 77 К при використанні Fe_MWCNT. Мікро- пористий Na_Y_Zeo та NH4_Y_Zeo виявляють більшу адсорбційну здатність водню, ніж мезопористий MCM-41. Показана можливість покращення адсорбційні властивостей цих пористих адсорбентів щодо водню внаслідок введення інших металів.
dc.description.abstractThe hydrogen adsorption and desorption isotherms of multiwalled carbon nanotube sample (MWCNT), an iron loaded multiwalled carbon nanotube (Fe_MWCNT), two zeolites (Na_Y_Zeo and NH4_Y_Zeo) and MCM-41 were measured at 77 K and atmospheric pressure by using the volumetric adsorption apparatus. The adsorption data were evaluated by several isotherm equations such as Langmuir, Freundlich, Temkin and Harkins-Jura isotherm models but were best described by the Freundlich isotherm model as it gave the highest correlation. The amount of adsorbed hydrogen by weight depended on the micropore volume of the sample, except for MWCNT and Fe_MWCNT. The porous samples were characterized by scanning electron microscopy (SEM) and N2 adsorption isotherms. The maximum hydrogen storage of 1.96 wt % at 77 K was achieved by Fe_MWCNT. Microporous Na_Y_Zeo and NH4_Y_Zeo showed higher hydrogen adsorption capacities than the mesoporous MCM-41. The hydrogen adsorption properties of these porous adsorbents may be further enhanced by different metal doping, thus paving the way for further study.
dc.format.extent129-135
dc.format.pages7
dc.identifier.citationErdogan F. O. Freundlich, Langmuir, Temkin and Harkins-Jura Isotherms Studies of H2 Adsorption on Porous Adsorbents / Fatma Oguz Erdogan // Chemistry & Chemical Technology. — Lviv : Lviv Politechnic Publishing House, 2019. — Vol 13. — No 2. — P. 129–135.
dc.identifier.citationenErdogan F. O. Freundlich, Langmuir, Temkin and Harkins-Jura Isotherms Studies of H2 Adsorption on Porous Adsorbents / Fatma Oguz Erdogan // Chemistry & Chemical Technology. — Lviv : Lviv Politechnic Publishing House, 2019. — Vol 13. — No 2. — P. 129–135.
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/46455
dc.language.isoen
dc.publisherВидавництво Львівської політехніки
dc.publisherLviv Politechnic Publishing House
dc.relation.ispartofChemistry & Chemical Technology, 2 (13), 2019
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dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2011.03.038
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2012.06.110
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2014.10.145
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2015.03.034
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2016.03.050
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2010.06.004
dc.relation.urihttps://doi.org/10.1016/j.rser.2015.05.011
dc.relation.urihttps://doi.org/10.1016/j.jiec.2015.02.012
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2010.09.102
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2007.12.021
dc.relation.urihttps://doi.org/10.1016/j.jcis.2010.02.047
dc.relation.urihttps://doi.org/10.1016/j.ultsonch.2016.12.032
dc.relation.urihttps://doi.org/10.1360/cjcp2006.19(5).457.6
dc.relation.urihttps://doi.org/10.1080/00032719.2015.1065879
dc.relation.urihttps://doi.org/10.1080/00032719.2015.1086776
dc.relation.urihttps://doi.org/10.7216/1300759920172410706
dc.relation.urihttps://doi.org/10.1007/s11814-010-0460-8
dc.relation.urihttps://doi.org/10.1260/0263617053499032
dc.relation.urihttps://doi.org/10.1007/s11814-014-0096-1
dc.relation.urihttps://doi.org/10.1007/s10934-012-9567-0
dc.relation.urihttps://doi.org/10.4172/1948-5948.1000292
dc.relation.urihttp://ena.lp.edu.ua
dc.relation.urihttps://doi.org/10.1016/j.cej.2010.03.016
dc.relation.urihttps://doi.org/10.1016/j.jallcom.2013.02.085
dc.rights.holder© Національний університет „Львівська політехніка“, 2019
dc.rights.holder© Erdogan F., 2019
dc.subjectадсорбційна здатність водню
dc.subjectбагатошарова карбонова нанотрубка
dc.subjectцеоліт
dc.subjectMCM-41
dc.subjectкомпозит залізо/багатошарова карбонова нанотрубка
dc.subjecthydrogen adsorption capacity
dc.subjectmultiwalled carbon nanotube
dc.subjectzeolite
dc.subjectMCM-41
dc.subjectiron multiwalled carbon nanotube composite
dc.titleFreundlich, Langmuir, Temkin and Harkins-Jura Isotherms Studies of H2 Adsorption on Porous Adsorbents
dc.title.alternativeДослідження ізотерм Фрейндліха, Ленгмюра, Темкіна та Гаркінса-Юри при адсорбції H2 на пористих адсорбентах
dc.typeArticle

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Chemistry & Chemical Technology. – 2019. – Vol. 13, No. 2