Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes

ilustraciones, graficas

Autores:
Cruz Alvarado, Yadhi Patricia
Tipo de recurso:
Doctoral thesis
Fecha de publicación:
2021
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/82113
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/82113
https://repositorio.unal.edu.co/
Palabra clave:
540 - Química y ciencias afines::542 - Técnicas, procedimientos, aparatos, equipos, materiales
SOLUCIONES (QUIMICA)
Solution (chemistry)
Aminoalcoholes
Entalpía de dilución
Volumen molar parcial
Compresibilidad molar parcial
Tensión superficial
Interacciones moleculares
Contribución de grupos polares
Amino alcohols
Dilution enthalpy
Partial molar volume
Partial molar compressibility
Surface tension
Molecular interactions
Contribution of polar groups
Rights
openAccess
License
Reconocimiento 4.0 Internacional
id UNACIONAL2_ef8b3dd60987ca93328135f947d6db94
oai_identifier_str oai:repositorio.unal.edu.co:unal/82113
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
dc.title.translated.eng.fl_str_mv Contribution of polar groups to the thermodynamic properties of aqueous solutions of amino alcohols
title Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
spellingShingle Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
540 - Química y ciencias afines::542 - Técnicas, procedimientos, aparatos, equipos, materiales
SOLUCIONES (QUIMICA)
Solution (chemistry)
Aminoalcoholes
Entalpía de dilución
Volumen molar parcial
Compresibilidad molar parcial
Tensión superficial
Interacciones moleculares
Contribución de grupos polares
Amino alcohols
Dilution enthalpy
Partial molar volume
Partial molar compressibility
Surface tension
Molecular interactions
Contribution of polar groups
title_short Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
title_full Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
title_fullStr Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
title_full_unstemmed Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
title_sort Contribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholes
dc.creator.fl_str_mv Cruz Alvarado, Yadhi Patricia
dc.contributor.advisor.none.fl_str_mv Romero Isaza, Carmen María
dc.contributor.author.none.fl_str_mv Cruz Alvarado, Yadhi Patricia
dc.contributor.researchgroup.spa.fl_str_mv Termodinámica Clásica
dc.subject.ddc.spa.fl_str_mv 540 - Química y ciencias afines::542 - Técnicas, procedimientos, aparatos, equipos, materiales
topic 540 - Química y ciencias afines::542 - Técnicas, procedimientos, aparatos, equipos, materiales
SOLUCIONES (QUIMICA)
Solution (chemistry)
Aminoalcoholes
Entalpía de dilución
Volumen molar parcial
Compresibilidad molar parcial
Tensión superficial
Interacciones moleculares
Contribución de grupos polares
Amino alcohols
Dilution enthalpy
Partial molar volume
Partial molar compressibility
Surface tension
Molecular interactions
Contribution of polar groups
dc.subject.lemb.spa.fl_str_mv SOLUCIONES (QUIMICA)
dc.subject.lemb.eng.fl_str_mv Solution (chemistry)
dc.subject.proposal.spa.fl_str_mv Aminoalcoholes
Entalpía de dilución
Volumen molar parcial
Compresibilidad molar parcial
Tensión superficial
Interacciones moleculares
Contribución de grupos polares
dc.subject.proposal.eng.fl_str_mv Amino alcohols
Dilution enthalpy
Partial molar volume
Partial molar compressibility
Surface tension
Molecular interactions
Contribution of polar groups
description ilustraciones, graficas
publishDate 2021
dc.date.issued.none.fl_str_mv 2021
dc.date.accessioned.none.fl_str_mv 2022-08-25T19:35:59Z
dc.date.available.none.fl_str_mv 2022-08-25T19:35:59Z
dc.type.spa.fl_str_mv Trabajo de grado - Doctorado
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/doctoralThesis
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_db06
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/TD
format http://purl.org/coar/resource_type/c_db06
status_str acceptedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/82113
dc.identifier.instname.spa.fl_str_mv Universidad Nacional de Colombia
dc.identifier.reponame.spa.fl_str_mv Repositorio Institucional Universidad Nacional de Colombia
dc.identifier.repourl.spa.fl_str_mv https://repositorio.unal.edu.co/
url https://repositorio.unal.edu.co/handle/unal/82113
https://repositorio.unal.edu.co/
identifier_str_mv Universidad Nacional de Colombia
Repositorio Institucional Universidad Nacional de Colombia
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.indexed.spa.fl_str_mv RedCol
LaReferencia
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spelling Reconocimiento 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Romero Isaza, Carmen Maríafb770e62e886e57e87d5668393243824Cruz Alvarado, Yadhi Patriciafc437d9f01f082dfcea3c0724f0add13Termodinámica Clásica2022-08-25T19:35:59Z2022-08-25T19:35:59Z2021https://repositorio.unal.edu.co/handle/unal/82113Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, graficasEn la presente investigación se presenta propiedades entálpicas, volumétricas y superficiales de mezclas de 3-amino-1-propanol, (RS)-1-amino-2-propanol ó (RS)-2-amino-1-propanol, 3-amino-1,2-propanodiol y 1,3-diamino-2-propano, con agua y en función de la temperatura. Los solutos seleccionados, sustituidos en diferentes posiciones con grupos hidroxilo y amino, permitieron evaluar el efecto de la contribución de los grupos polares en las interacciones moleculares en solución acuosa. Las entalpías de dilución se determinaron empleando microcalorimetría de flujo a 298,15 K, mientras que a partir de la teoría de McMillan-Mayer se calcularon los coeficientes de interacción entre pares de moléculas, por lo que se aplicó un esquema de contribución de grupo. A su vez, las propiedades volumétricas se encontraron a partir de medidas de densidad y velocidad del sonido de soluciones diluidas en función de la composición y la temperatura en el rango de 293,15 a 308,15 K; con las cuales se analizó el proceso de hidratación y se calcularon los números de hidratación. La tensión superficial de las mezclas se evaluó por el método de volumen de gota pendiente en función de la temperatura (293,15 a 308,15 K) y en todo el rango de composición, obteniendo parámetros de hidrofobicidad, coeficientes de actividad y propiedades de superficie. Los resultados fueron analizados en términos de las interacciones moleculares soluto-agua y soluto-soluto, además del proceso de hidratación. Se encontró que la contribución de los grupos polares no es aditiva, además de una notable diferencia entre la contribución de cada uno de los grupos a las propiedades termodinámicas evaluadas. (Texto tomado de la fuente)This research presents enthalpic, volumetric and surface properties of mixtures of 3-amino-1-propanol, (RS) -1-amino-2-propanol or (RS) -2-amino-1-propanol, 3-amino -1,2-propanediol and 1,3-diamino-2-propane, with water and as a function of temperature. The selected solutes, substituted in different positions with hydroxyl and amino groups, allowed to evaluate the effect of the contribution of the polar groups in the molecular interactions in aqueous solution. The dilution enthalpies, were determined using flow microcalorimetry at 298.15 K and from McMillan's theory the interaction coefficients between pairs of molecules were calculated and a group contribution scheme was applied. In addition, the volumetric properties were found from measurements of density and speed of sound, in dilute solutions as a function with composition and temperature in the range of 293.15 to 308.15 K; with which the hydration process was analyzed and the hydration numbers were calculated. The surface tension of the mixtures was evaluated by the volume pendant drop method, as a function of temperature (293.15 to 308.15 K) and throughout the composition range; obtaining hydrophobicity parameters, activity coefficients and surface properties. The results were analyzed in terms of solute-water and solute-solute molecular interactions, in addition to the hydration process. In turn, it was found that the contribution of the polar groups is not additive, in addition to a notable difference between the contribution of each of the groups to the evaluated thermodynamic properties.DoctoradoDoctor en Ciencias - QuímicaEstudio Fisicoquímico de Interacciones en Soluciónxxv, 179 páginasapplication/pdfspaUniversidad Nacional de ColombiaBogotá - Ciencias - Doctorado en Ciencias - QuímicaDepartamento de QuímicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá540 - Química y ciencias afines::542 - Técnicas, procedimientos, aparatos, equipos, materialesSOLUCIONES (QUIMICA)Solution (chemistry)AminoalcoholesEntalpía de diluciónVolumen molar parcialCompresibilidad molar parcialTensión superficialInteracciones molecularesContribución de grupos polaresAmino alcoholsDilution enthalpyPartial molar volumePartial molar compressibilitySurface tensionMolecular interactionsContribution of polar groupsContribución de grupos polares a las propiedades termodinámicas de soluciones acuosas de aminoalcoholesContribution of polar groups to the thermodynamic properties of aqueous solutions of amino alcoholsTrabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06Texthttp://purl.org/redcol/resource_type/TDRedColLaReferenciaP. 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[Accessed: 10-Mar-2014].Estudio fisicoquímico de interacciones en solución. 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