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Influencia de los parámetros críticos en la estimación de la densidad de algunos ácidos grasos por el método de Rackett

Authors: Cedeño González, Fidel Oscar; Prieto González, María Manuela; Alonso Suárez, Rafael; Bada Gancedo, Juan Carlos;

Influencia de los parámetros críticos en la estimación de la densidad de algunos ácidos grasos por el método de Rackett

Abstract

[ES] En este trabajo se realiza un estudio comparativo de las propiedades críticas temperatura y presión en los ácidos grasos palmítico, esteárico y oléico, proporcionadas por diferentes fuentes bibliográficas. Estas propiedades se utilizan en la ecuación de Rackett para estimar la densidad de las sustancias puras. Se describen y emplean los métodos más comúnmente aplicados en estos casos para estimar dichas propiedades críticas. Se selecciona un conjunto de valores de propiedades críticas para aplicarlas en la estimación de la densidad por la ecuación de Rackett. Se proponen los valores de las propiedades críticas con los que se obtiene una mejor estimación de la densidad, cuando se compara con resultados experimentales. Se demuestra que la selección de las propiedades críticas influye de forma decisiva en la estimación de propiedades físicas mediante la ecuación de Rackett.

[EN] In this work a comparative study is carried out of the critical properties of temperature and pressure applied for the palmitic, stearic and oleic fatty acids, provided by different bibliographical sources. These properties are used in the Rackett's equation to estimate the density of the pure substances. The most commonly employed methods are described and applied in these cases to estimate these critical properties. A group of values of critical properties is selected to estimate the density using the Rackett's equation. The values of the critical properties that give a better estimation of the density, according to Rackett's equation, when compared with the experimental results are proposed. It is demonstrated that the selection of the critical properties influences in a decisive way in the estimation of physical properties by means of the Rackett's equation.

Los autores hacen constar su agradecimiento a: La Comisión Interministerial de Ciencia y Tecnología, por la ayuda recibida para la realización de este trabajo: ALI 95 0517. Al Instituto de Cooperación Iberoamericana (ICI), por la beca proporcionada para la realización de la Tesis Doctoral.

9 páginas, 3 figuras, 3 tablas.

Peer reviewed

Keywords

Ecuación de Rackett, Presión crítica, Rackett's equation, Critical temperature, Density, Critical pressure, Densidad, Fatty acid, Temperatura crítica, Ácidos grasos, Acido graso

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green