Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths

Activated carbon cloths (ACCs) from denim fabric were developed by phosphoric acid activation in an inert atmosphere. The effect of acid concentration (5-15 wt %) and final thermal treatment temperature (600-950°C) on yield, chemical characteristics (elemental composition, ash, total acidity), poros...

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Autores principales: Ramos, M.E., Gonzalez, J.D., Bonelli, P.R., Cukierman, A.L.
Formato: JOUR
Materias:
Activated carbon
Concentration (process)
Thermogravimetric analysis
Activated carbon cloths (ACC)
Joule effect
Porosity development
Fabrics
Activated Carbon
Concentration
Forming Fabrics
Thermal Analysis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08885885_v46_n4_p1167_Ramos
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_08885885_v46_n4_p1167_Ramos2023-10-03T15:41:05Z Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths Ramos, M.E. Gonzalez, J.D. Bonelli, P.R. Cukierman, A.L. Activated carbon Concentration (process) Thermogravimetric analysis Activated carbon cloths (ACC) Joule effect Porosity development Fabrics Activated carbon Concentration (process) Fabrics Thermogravimetric analysis Activated Carbon Concentration Forming Fabrics Thermal Analysis Activated carbon cloths (ACCs) from denim fabric were developed by phosphoric acid activation in an inert atmosphere. The effect of acid concentration (5-15 wt %) and final thermal treatment temperature (600-950°C) on yield, chemical characteristics (elemental composition, ash, total acidity), porosity development, morphology, and electrical properties of the resulting ACCs were examined. Noticeable changes in the thermal behavior of the precursor due to acid impregnation were detected from thermogravimetric measurements using comparative samples of raw and acid-treated denim. ACCs properties were dependent on a combined effect of the conditions employed, though the temperature exerted a major influence. The ACCs prepared with 10 wt % acid concentration at 950°C showed maximum BET surface area (1055 m 2/g) and total pore volume (0.53 cm3/g), and well-preserved fibers integrity. Almost all the denim-derived ACCs were electrically conductive, following ohmic behavior. Increasing the final temperature from 600 to 800°C led to a substantial change in electrical conductivity. The ACCs were heated by Joule effect, attaining surface temperatures in the range 300-500 K. Electrical resistivity of the ACCs was found to depend on the extent of porosity development. © 2007 American Chemical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08885885_v46_n4_p1167_Ramos
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Activated carbon
Concentration (process)
Thermogravimetric analysis
Activated carbon cloths (ACC)
Joule effect
Porosity development
Fabrics
Activated carbon
Concentration (process)
Fabrics
Thermogravimetric analysis
Activated Carbon
Concentration
Forming Fabrics
Thermal Analysis
spellingShingle Activated carbon
Concentration (process)
Thermogravimetric analysis
Activated carbon cloths (ACC)
Joule effect
Porosity development
Fabrics
Activated carbon
Concentration (process)
Fabrics
Thermogravimetric analysis
Activated Carbon
Concentration
Forming Fabrics
Thermal Analysis
Ramos, M.E.
Gonzalez, J.D.
Bonelli, P.R.
Cukierman, A.L.
Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
topic_facet Activated carbon
Concentration (process)
Thermogravimetric analysis
Activated carbon cloths (ACC)
Joule effect
Porosity development
Fabrics
Activated carbon
Concentration (process)
Fabrics
Thermogravimetric analysis
Activated Carbon
Concentration
Forming Fabrics
Thermal Analysis
description Activated carbon cloths (ACCs) from denim fabric were developed by phosphoric acid activation in an inert atmosphere. The effect of acid concentration (5-15 wt %) and final thermal treatment temperature (600-950°C) on yield, chemical characteristics (elemental composition, ash, total acidity), porosity development, morphology, and electrical properties of the resulting ACCs were examined. Noticeable changes in the thermal behavior of the precursor due to acid impregnation were detected from thermogravimetric measurements using comparative samples of raw and acid-treated denim. ACCs properties were dependent on a combined effect of the conditions employed, though the temperature exerted a major influence. The ACCs prepared with 10 wt % acid concentration at 950°C showed maximum BET surface area (1055 m 2/g) and total pore volume (0.53 cm3/g), and well-preserved fibers integrity. Almost all the denim-derived ACCs were electrically conductive, following ohmic behavior. Increasing the final temperature from 600 to 800°C led to a substantial change in electrical conductivity. The ACCs were heated by Joule effect, attaining surface temperatures in the range 300-500 K. Electrical resistivity of the ACCs was found to depend on the extent of porosity development. © 2007 American Chemical Society.
format JOUR
author Ramos, M.E.
Gonzalez, J.D.
Bonelli, P.R.
Cukierman, A.L.
author_facet Ramos, M.E.
Gonzalez, J.D.
Bonelli, P.R.
Cukierman, A.L.
author_sort Ramos, M.E.
title Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
title_short Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
title_full Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
title_fullStr Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
title_full_unstemmed Effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
title_sort effect of process conditions on physicochemical and electrical characteristics of denim-based activated carbon cloths
url http://hdl.handle.net/20.500.12110/paper_08885885_v46_n4_p1167_Ramos
work_keys_str_mv AT ramosme effectofprocessconditionsonphysicochemicalandelectricalcharacteristicsofdenimbasedactivatedcarboncloths
AT gonzalezjd effectofprocessconditionsonphysicochemicalandelectricalcharacteristicsofdenimbasedactivatedcarboncloths
AT bonellipr effectofprocessconditionsonphysicochemicalandelectricalcharacteristicsofdenimbasedactivatedcarboncloths
AT cukiermanal effectofprocessconditionsonphysicochemicalandelectricalcharacteristicsofdenimbasedactivatedcarboncloths
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