Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation

Abstract: This document shows the results of cyclic voltammetry and fuel cell simulation for the process of electrochemical oxidation of soluble coal compounds in molten KOH. It is shown that nickel and some nickel alloys like inconel 600, chromel and alumel are suitable catalytic materials for this...

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Autores:
Cisneros Álvarez, Sebastián Antonio
Tipo de recurso:
Fecha de publicación:
2014
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/50389
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/50389
http://bdigital.unal.edu.co/44377/
Palabra clave:
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
Coal
Fuel cell
Molten KOH
Power density
Current density
Electric potential
Carbón
Celda de combustible
KOH fundido
Densidad de potencia
Densidad de corriente
Potencial eléctrico
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_a9895fb8940a13c4f586f7cf07d16dda
oai_identifier_str oai:repositorio.unal.edu.co:unal/50389
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
title Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
spellingShingle Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
Coal
Fuel cell
Molten KOH
Power density
Current density
Electric potential
Carbón
Celda de combustible
KOH fundido
Densidad de potencia
Densidad de corriente
Potencial eléctrico
title_short Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
title_full Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
title_fullStr Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
title_full_unstemmed Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
title_sort Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation
dc.creator.fl_str_mv Cisneros Álvarez, Sebastián Antonio
dc.contributor.advisor.spa.fl_str_mv Sánchez Sáenz, Carlos Ignacio (Thesis advisor)
dc.contributor.author.spa.fl_str_mv Cisneros Álvarez, Sebastián Antonio
dc.subject.ddc.spa.fl_str_mv 66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
topic 66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
Coal
Fuel cell
Molten KOH
Power density
Current density
Electric potential
Carbón
Celda de combustible
KOH fundido
Densidad de potencia
Densidad de corriente
Potencial eléctrico
dc.subject.proposal.spa.fl_str_mv Coal
Fuel cell
Molten KOH
Power density
Current density
Electric potential
Carbón
Celda de combustible
KOH fundido
Densidad de potencia
Densidad de corriente
Potencial eléctrico
description Abstract: This document shows the results of cyclic voltammetry and fuel cell simulation for the process of electrochemical oxidation of soluble coal compounds in molten KOH. It is shown that nickel and some nickel alloys like inconel 600, chromel and alumel are suitable catalytic materials for this process at the anode. Exchange current densities vary between 28 and 83 A/m2 and charge transfer coefficients vary between 0.47 and 0.58. Voltammetry experiments also demonstrate that iron alloys, in general, are not suitable for this process because of dissolution of the material. Here voltammetry studies were performed on 410 stainless steel as iron alloy model material. The information obtained after non linear regression analysis to calculate the kinetic parameters for the anodic processes, and that extracted from literature for the cathodic ones, served to solve one proposed model for the continuous steady state operation of a fuel cell for the oxidation of dissolved coal compounds in molten KOH. Comparison of polarization curve and maximum fuel cell power density, obtained by the fuel cell simulation, with those reported by experimental studies show that the proposed model represents the main macroscopic phenomena of this type of systems.
publishDate 2014
dc.date.issued.spa.fl_str_mv 2014-10-22
dc.date.accessioned.spa.fl_str_mv 2019-06-29T10:09:49Z
dc.date.available.spa.fl_str_mv 2019-06-29T10:09:49Z
dc.type.spa.fl_str_mv Trabajo de grado - Maestría
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/masterThesis
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/TM
status_str acceptedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/50389
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/44377/
url https://repositorio.unal.edu.co/handle/unal/50389
http://bdigital.unal.edu.co/44377/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Química y Petróleos Ingeniería de Petróleos
Ingeniería de Petróleos
dc.relation.references.spa.fl_str_mv Cisneros Álvarez, Sebastián Antonio (2014) Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation. Maestría thesis, Universidad Nacional de Colombia - Sede Medellín.
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
institution Universidad Nacional de Colombia
bitstream.url.fl_str_mv https://repositorio.unal.edu.co/bitstream/unal/50389/1/1020411898.2014.pdf
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repository.name.fl_str_mv Repositorio Institucional Universidad Nacional de Colombia
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Sánchez Sáenz, Carlos Ignacio (Thesis advisor)f7910df4-aa65-40ee-9577-35ddedab07e3-1Cisneros Álvarez, Sebastián Antoniod455b192-37ee-4d4a-957a-17ee8a2e6aaf3002019-06-29T10:09:49Z2019-06-29T10:09:49Z2014-10-22https://repositorio.unal.edu.co/handle/unal/50389http://bdigital.unal.edu.co/44377/Abstract: This document shows the results of cyclic voltammetry and fuel cell simulation for the process of electrochemical oxidation of soluble coal compounds in molten KOH. It is shown that nickel and some nickel alloys like inconel 600, chromel and alumel are suitable catalytic materials for this process at the anode. Exchange current densities vary between 28 and 83 A/m2 and charge transfer coefficients vary between 0.47 and 0.58. Voltammetry experiments also demonstrate that iron alloys, in general, are not suitable for this process because of dissolution of the material. Here voltammetry studies were performed on 410 stainless steel as iron alloy model material. The information obtained after non linear regression analysis to calculate the kinetic parameters for the anodic processes, and that extracted from literature for the cathodic ones, served to solve one proposed model for the continuous steady state operation of a fuel cell for the oxidation of dissolved coal compounds in molten KOH. Comparison of polarization curve and maximum fuel cell power density, obtained by the fuel cell simulation, with those reported by experimental studies show that the proposed model represents the main macroscopic phenomena of this type of systems.Resumen: En este documento se presentan los resultados de voltametría cíclica y simulación de una celda de combustible para el proceso de oxidación electroquímica de compuestos de carbón solubles en KOH fundido. Se demuestra que el níquel y algunas de sus aleaciones, como Inconel 600, cromel y alumel, son materiales catalíticos adecuados para llevar a cabo este proceso en el ánodo. Las corrientes de intercambio varían entre 28 y 83 A/m2 y los valores de los coeficiente de transferencia se encuentran en un intervalo entre 0.47 y 0.58. Los experimentos de voltametría indican también que las aleaciones de hierro, en general, no son adecuadas para llevar a cabo estos procesos debido a la disolución de este material. En este trabajo los estudios de voltametría fueron llevados a cabo usando acero inoxidable 410 como material modelo. La información obtenida después del análisis de regresión no lineal para calcular los parámetros cinéticos del proceso anódico, y aquellos obtenidos de la literatura para los procesos catódicos, sirvieron para resolver un modelo propuesto para la operación en continuo y en estado estable de una celda de combustible para la oxidación de compuestos de carbón soluble en KOH fundido.Maestríaapplication/pdfspaUniversidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Química y Petróleos Ingeniería de PetróleosIngeniería de PetróleosCisneros Álvarez, Sebastián Antonio (2014) Cyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulation. Maestría thesis, Universidad Nacional de Colombia - Sede Medellín.66 Ingeniería química y Tecnologías relacionadas/ Chemical engineeringCoalFuel cellMolten KOHPower densityCurrent densityElectric potentialCarbónCelda de combustibleKOH fundidoDensidad de potenciaDensidad de corrientePotencial eléctricoCyclic voltammetry evaluation of different anode materials for the electrooxidation of coal dissolved compounds in molten KOH and fuel cell simulationTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMORIGINAL1020411898.2014.pdfTesis de Maestría en Ingeniería - Ingeniería Químicaapplication/pdf1256808https://repositorio.unal.edu.co/bitstream/unal/50389/1/1020411898.2014.pdf927cc40b5ef62141e7389bdf153124d7MD51THUMBNAIL1020411898.2014.pdf.jpg1020411898.2014.pdf.jpgGenerated Thumbnailimage/jpeg4287https://repositorio.unal.edu.co/bitstream/unal/50389/2/1020411898.2014.pdf.jpg3e62713388c18b6282a89f33c8fd8c06MD52unal/50389oai:repositorio.unal.edu.co:unal/503892023-10-10 21:20:16.566Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co

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