Quantitative measurement of complex substances dissolved in an ionic liquid using IR spectroscopy and chemometrics

Kiefer J, Bösmann A, Wasserscheid P (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Technisches Messen Oldenbourg Verlag

Book Volume: 84

Pages Range: 32-37

Journal Issue: 1

DOI: 10.1515/teme-2016-0031

Abstract

In the past two decades, ionic liquids have found many applications as solvents for complex solutes. Prominent examples are the dissolution of biomass and carbohydrates as well as catalytically active substances. The chemical analysis of such solutions, however, is still a challenge due to the molecular complexity. In the present work, the use of infrared spectroscopy for quantifying the concentration of different solutes dissolved in an imidazolium-based ionic liquid is investigated. Binary solutions of glucose, cellubiose, and Wilkinson's catalyst in 1-ethyl-3-methylimidazolium acetate are studied as examples. For this purpose, different chemometric approaches (principal component analysis (PCA), partial least-squares regression (PLSR), and principal component regression (PCR)) for analyzing the spectra are tested. Principal component analysis was found to be suitable for classifying the different solutions. Both regression techniques were capable of deriving accurate concentration values. The performance of PLSR was slightly better than that of PCR for the same number of components.

Authors with CRIS profile

Andreas Bösmann Lehrstuhl für Chemische Reaktionstechnik (CRT) Peter Wasserscheid Lehrstuhl für Chemische Reaktionstechnik (CRT)

Involved external institutions

Universität Bremen DE Germany (DE)

How to cite

APA:

Kiefer, J., Bösmann, A., & Wasserscheid, P. (2017). Quantitative measurement of complex substances dissolved in an ionic liquid using IR spectroscopy and chemometrics. Technisches Messen, 84(1), 32-37. https://doi.org/10.1515/teme-2016-0031

MLA:

Kiefer, Johannes, Andreas Bösmann, and Peter Wasserscheid. "Quantitative measurement of complex substances dissolved in an ionic liquid using IR spectroscopy and chemometrics." Technisches Messen 84.1 (2017): 32-37.

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