Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6977
Title: Dynamic heat of adsorption of water vapour on zeolitic tuff and zeolite 4A by flow microcalorimetry
Authors: Ülkü, Semra
Balköse, Devrim
Alp, Burcu
Ülkü, Semra
Balköse, Devrim
Alp, Burcu
Izmir Institute of Technology. Chemical Engineering
Keywords: Heat of adsorption
Microcalorimeter
Specific heat
Zeolites
Water vapour adsorption
Issue Date: 2006
Publisher: Scibulcom Ltd.
Source: Ülkü, S., Balköse, D., and Alp, B. (2006). Dynamic heat of adsorption of water vapour on zeolitic tuff and zeolite 4A by flow microcalorimetry. Oxidation Communications, 29(1), 204-2015.
Abstract: In this study a practical method for measurement of heat of adsorption of water vapour on adsorbents was developed to evaluate the feasibility of substitution of a zeolitic tuff with zeolite 4A in air drying and heat pumps. The change of heat of adsorption with inlet humidity of the air passing through the calorimeter was investigated. Samples were characterised by X-ray diffraction and thermal gravimetric analysis techniques. Specific heats of the zeolitic tuff and zeolite 4A were measured as 1.01 and 1.42 J/g K, respectively. Adsorption isotherms fitted to the Langmuir model with regression coefficient 0.93 and 0.94 with monolayer capacities, Xm 9.68% and 26.35% H 2O for the zeolitic tuff and zeolite 4A, respectively. The energy storage intensity was measured in the range 48-97 J/g and 464-201 J/g for the tuff and zeolite 4A, respectively. Heat of adsorption of zeolite decreased with surface coverage and it was in the range 1750-2835 and 1104-2640 J/g H 2O for the zeolitic tuff and zeolite 4A, respectively.
URI: http://hdl.handle.net/11147/6977
ISSN: 0209-4541
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
6977.pdfMakale508.34 kBAdobe PDFThumbnail
View/Open
Show full item record

CORE Recommender

Page view(s)

8
checked on Aug 2, 2021

Download(s)

2
checked on Aug 2, 2021

Google ScholarTM

Check


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.