Influences of the chemical structure of entrainers on the activity coefficients in presence of biodiesel

A. Mäder; A. Fleischmann; Y. Fang; J. Krahl; W. Ruck

doi:10.1088/1742-6596/364/1/012010

Influences of the chemical structure of entrainers on the activity coefficients in presence of biodiesel

Publikation: Beiträge in Zeitschriften › Konferenzaufsätze in Fachzeitschriften › Forschung

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Influences of the chemical structure of entrainers on the activity coefficients in presence of biodiesel. / Mäder, A.; Fleischmann, A.; Fang, Y. et al.

in: Journal of Physics: Conference Series, Jahrgang 364, Nr. 1, 012010, 28.05.2012.

Publikation: Beiträge in Zeitschriften › Konferenzaufsätze in Fachzeitschriften › Forschung

Bibtex

@article{92c821dae7c74ab4938196f7900df469,

title = "Influences of the chemical structure of entrainers on the activity coefficients in presence of biodiesel",

abstract = "In this work we analyzed the strength of the intermolecular forces between biodiesel and the entrainer and their influence on the entrainer's ability to interact with biodiesel. Furthermore we investigated the influence of the chemical structure of an entrainer to the interaction with biodiesel. For this purpose the activity coefficients γ at infinite dilution of acids, aldehydes, ketones and alcohols in biodiesel were measured with the method of headspace gas chromatography (HSGC). Short-chained acids showed the highest interaction of the analyzed entrainers caused by their ability to build hydrogen bonds with biodiesel. Increased chain length of the acids cause reduced interaction with biodiesel, which is mainly due to the higher obstruction of the acid molecule and therefore the reduced ability to build hydrogen bonds with biodiesel. Aldehydes, ketones and alcohols showed lower interaction with biodiesel compared to the acids. Longer-chained alcohols showed increased interaction with biodiesel due to the raised London Forces and an inductive +I effect of the molecule chain.",

keywords = "Chemistry, activity coefficients, headspace gas chromatography, molecular interactions",

author = "A. M{\"a}der and A. Fleischmann and Y. Fang and J. Krahl and W. Ruck",

year = "2012",

month = may,

day = "28",

doi = "10.1088/1742-6596/364/1/012010",

language = "English",

volume = "364",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd",

number = "1",

}

RIS

TY - JOUR

T1 - Influences of the chemical structure of entrainers on the activity coefficients in presence of biodiesel

AU - Mäder, A.

AU - Fleischmann, A.

AU - Fang, Y.

AU - Krahl, J.

AU - Ruck, W.

PY - 2012/5/28

Y1 - 2012/5/28

N2 - In this work we analyzed the strength of the intermolecular forces between biodiesel and the entrainer and their influence on the entrainer's ability to interact with biodiesel. Furthermore we investigated the influence of the chemical structure of an entrainer to the interaction with biodiesel. For this purpose the activity coefficients γ at infinite dilution of acids, aldehydes, ketones and alcohols in biodiesel were measured with the method of headspace gas chromatography (HSGC). Short-chained acids showed the highest interaction of the analyzed entrainers caused by their ability to build hydrogen bonds with biodiesel. Increased chain length of the acids cause reduced interaction with biodiesel, which is mainly due to the higher obstruction of the acid molecule and therefore the reduced ability to build hydrogen bonds with biodiesel. Aldehydes, ketones and alcohols showed lower interaction with biodiesel compared to the acids. Longer-chained alcohols showed increased interaction with biodiesel due to the raised London Forces and an inductive +I effect of the molecule chain.

AB - In this work we analyzed the strength of the intermolecular forces between biodiesel and the entrainer and their influence on the entrainer's ability to interact with biodiesel. Furthermore we investigated the influence of the chemical structure of an entrainer to the interaction with biodiesel. For this purpose the activity coefficients γ at infinite dilution of acids, aldehydes, ketones and alcohols in biodiesel were measured with the method of headspace gas chromatography (HSGC). Short-chained acids showed the highest interaction of the analyzed entrainers caused by their ability to build hydrogen bonds with biodiesel. Increased chain length of the acids cause reduced interaction with biodiesel, which is mainly due to the higher obstruction of the acid molecule and therefore the reduced ability to build hydrogen bonds with biodiesel. Aldehydes, ketones and alcohols showed lower interaction with biodiesel compared to the acids. Longer-chained alcohols showed increased interaction with biodiesel due to the raised London Forces and an inductive +I effect of the molecule chain.

KW - Chemistry

KW - activity coefficients

KW - headspace gas chromatography

KW - molecular interactions

UR - http://www.scopus.com/inward/record.url?scp=84862490654&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/364/1/012010

DO - 10.1088/1742-6596/364/1/012010

M3 - Conference article in journal

AN - SCOPUS:84862490654

VL - 364

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012010

ER -