Rosenberg, Egon Erwin

Antoniadou, Maria

Kanakaki, Chrysoula

Klampfl, Bernhard

Müller, Robert Daniel

Greibich, Michael

Kahr, Jürgen

2023-02-22T11:40:25Z

2023-02-22T11:40:25Z

2022-07-01

<div class="csl-bib-body"> <div class="csl-entry">Rosenberg, E. E., Antoniadou, M., Kanakaki, C., Klampfl, B., Müller, R. D., Greibich, M., &#38; Kahr, J. (2022, July 1). <i>Revisiting the van Deemter Equation: Various Ways to Speed up Chromatography</i> [Keynote Presentation]. 26th International Symposium on Separation Sciences (ISSS 2022), Ljubljana, Slovenia. http://hdl.handle.net/20.500.12708/154262</div> </div>

http://hdl.handle.net/20.500.12708/154262

Gas chromatography is the most powerful technique to separate mixtures of volatile compounds; however, doing so normally requires a significant amount of time, and imposes thus limitation to the speed and the time resolution that can be achieved with chromatographic measurements. Many technologically relevant processes do, however, require measurements with a time resolution that is at the scale of one minute, or potentially even less. From the van Deemter equation it is obvious that it is impossible to maximise separation speed beyond the optimum separation velocity without losing efficiency [1]. A closer inspection of this equation reveals, however, various possibilities to gain separation speed. We will discuss various approaches to speed up chromatographic separation and to gain time resolution between measurements that we have developed and applied in response to the need of monitoring the volatile compounds formed by the degradation of the organic electrolyte of lithium ion batteries during various use conditions. As extreme operation conditions or misuse can lead to catastrophic degradation of the electrolyte in the lithium ion battery, fast responding chromatographic techniques are required [2]. These include the use of vacuum outlet conditions, multiplexing, and of fast (positive or negative) thermal gradients. Their individual benefits and limitations will be presented and critically discussed here, with a particular view to their practical applicability. References [1] J.J. van Deemter, F.J. Zuiderweg, A. Klinkenberg, Chem. Eng. Sci. 5 (1956) 271-289. [2] Y.P. Stenzel, F. Horsthemke, M. Winter, S. Nowak, Separations 2019, 6(2), 26. Acknowledgements The authors gratefully acknowledge financial support of this work by the Austrian Research Promotion Agency (FFG) under Project numbers 835790 (“SiLithium”), 858298 (“DianaBatt”) and 879613 (“OPERION”).

en

fast gas chromatography

chromatographic theory

vacuum outlet (lo pressure)-GC

multiplexing-GC

thermal gradient GC

Revisiting the van Deemter Equation: Various Ways to Speed up Chromatography

Presentation

Vortrag

Austrian Institute of Technology, Austria

Keynote Presentation

invited

M2

E2

Materials Characterization

Sustainable and Low Emission Mobility

30

70

E164-01-2 - Forschungsgruppe Oberflächen-, Spurenanalytik und Chemometrie

26th International Symposium on Separation Sciences (ISSS 2022)

28-06-2022

01-07-2022

On Site

Event for scientific audience

Ljubljana

SI

Central European Group for Separation Sciences (CEGSS) & University of Ljubljana

Rosenberg, Egon Erwin

Single Track

Chemie

1040

100

http://purl.org/coar/resource_type/c_18cp

en

no Fulltext

none

conference paper not in proceedings

Publications

E164-01-2 - Forschungsgruppe Oberflächen-, Spurenanalytik und Chemometrie

E164-01-2 - Forschungsgruppe Oberflächen-, Spurenanalytik und Chemometrie

E164 - Institut für Chemische Technologien und Analytik

E164-01-2 - Forschungsgruppe Oberflächen-, Spurenanalytik und Chemometrie

E164 - Institut für Chemische Technologien und Analytik

Austrian Institute of Technology

E164-01 - Forschungsbereich Imaging und Instrumentelle Analytische Chemie

E164-01 - Forschungsbereich Imaging und Instrumentelle Analytische Chemie

E150 - Fakultät für Technische Chemie

E164-01 - Forschungsbereich Imaging und Instrumentelle Analytische Chemie

E150 - Fakultät für Technische Chemie