Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2

Aging impact on silver-functionalized silica aerogel (Ag0-aerogel) in the off-gas streams including dry air, humid air, 1% NO/N2, and 2% NO2/dry air were studied. Aged Ag0-aerogel was prepared through a continuous-flow aging system by exposing Ag0-aerogel (unaged) to the off-gas streams at different...

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Autores principales:	Seungrag Choi, Yue Nan, Lawrence L. Tavlarides
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Silver functionalized silica aerogel Aging process Iodine adsorption Reaction kinetics Ag particles Reaction kinetics modeling Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/c63e1b476af949b8b468f3fad199a975
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spelling	oai:doaj.org-article:c63e1b476af949b8b468f3fad199a9752021-11-18T04:53:29ZAging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO22666-821110.1016/j.ceja.2021.100191https://doaj.org/article/c63e1b476af949b8b468f3fad199a9752021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S266682112100106Xhttps://doaj.org/toc/2666-8211Aging impact on silver-functionalized silica aerogel (Ag0-aerogel) in the off-gas streams including dry air, humid air, 1% NO/N2, and 2% NO2/dry air were studied. Aged Ag0-aerogel was prepared through a continuous-flow aging system by exposing Ag0-aerogel (unaged) to the off-gas streams at different aging temperatures and time. Iodine loading capacity on the aged Ag0-aerogel was obtained through a continuous-flow adsorption system. Iodine loading capacity losses were observed after the Ag0-aerogel was exposed to the off-gas streams. Characterization studies were conducted to observe the physical and chemical changes of the Ag0-aerogel after exposed to gas streams. According to iodine adsorption data and analyses, it was revealed that iodine loading capacity on the aged Ag0-aerogel in the off-gas streams decreases with increasing aging temperatures and time. The pseudo reaction model describes experimental data well and the oxidation of Ag0 is the rate determining step in the aging process.Seungrag ChoiYue NanLawrence L. TavlaridesElsevierarticleSilver functionalized silica aerogelAging processIodine adsorptionReaction kineticsAg particlesReaction kinetics modelingChemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 8, Iss , Pp 100191- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Silver functionalized silica aerogel Aging process Iodine adsorption Reaction kinetics Ag particles Reaction kinetics modeling Chemical engineering TP155-156
spellingShingle	Silver functionalized silica aerogel Aging process Iodine adsorption Reaction kinetics Ag particles Reaction kinetics modeling Chemical engineering TP155-156 Seungrag Choi Yue Nan Lawrence L. Tavlarides Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2
description	Aging impact on silver-functionalized silica aerogel (Ag0-aerogel) in the off-gas streams including dry air, humid air, 1% NO/N2, and 2% NO2/dry air were studied. Aged Ag0-aerogel was prepared through a continuous-flow aging system by exposing Ag0-aerogel (unaged) to the off-gas streams at different aging temperatures and time. Iodine loading capacity on the aged Ag0-aerogel was obtained through a continuous-flow adsorption system. Iodine loading capacity losses were observed after the Ag0-aerogel was exposed to the off-gas streams. Characterization studies were conducted to observe the physical and chemical changes of the Ag0-aerogel after exposed to gas streams. According to iodine adsorption data and analyses, it was revealed that iodine loading capacity on the aged Ag0-aerogel in the off-gas streams decreases with increasing aging temperatures and time. The pseudo reaction model describes experimental data well and the oxidation of Ag0 is the rate determining step in the aging process.
format	article
author	Seungrag Choi Yue Nan Lawrence L. Tavlarides
author_facet	Seungrag Choi Yue Nan Lawrence L. Tavlarides
author_sort	Seungrag Choi
title	Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2
title_short	Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2
title_full	Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2
title_fullStr	Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2
title_full_unstemmed	Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2
title_sort	aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, no and no2
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c63e1b476af949b8b468f3fad199a975
work_keys_str_mv	AT seungragchoi agingkineticsonsilverfunctionalizedsilicaaerogelinoffgasstreamsincludingdryairhumidairnoandno2 AT yuenan agingkineticsonsilverfunctionalizedsilicaaerogelinoffgasstreamsincludingdryairhumidairnoandno2 AT lawrenceltavlarides agingkineticsonsilverfunctionalizedsilicaaerogelinoffgasstreamsincludingdryairhumidairnoandno2
_version_	1718424939704352768

Aging kinetics on silver-functionalized silica aerogel in off-gas streams including dry air, humid air, NO and NO2

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