Molecular Properties of Fatty Acid Mixtures Estimated by Online Time-Domain NMR

An approach based on time-domain nuclear magnetic resonance (TD-NMR) enables the estimation of the molecular properties of fatty acid mixtures—kinematic viscosity ( µ ), heating value ( δ ), cetane number (CN), and carbon chain length (CL). In this approach, the 1 H NMR spin–spin relaxation rates R...

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Veröffentlicht in:	Applied magnetic resonance 2019-03, Vol.50 (1-3), p.159-170
Hauptverfasser:	Nikolskaya, Ekaterina, Hiltunen, Yrjö
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Atoms and Molecules in Strong Fields Automation Biodiesel fuels Biofuels Calorific value Carbon Cetane number Diesel fuels Fatty acids Kinematics Laser Matter Interaction Liquid fuels Magnetic properties Mixtures Molecular chains Molecular properties Molecular weight NMR Nuclear magnetic resonance Organic Chemistry Original Paper Physical Chemistry Physics Physics and Astronomy Process controls Quality control Quality standards Solid State Physics Spectroscopy/Spectrometry Spectrum analysis Time domain analysis Viscosity
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Zusammenfassung:	An approach based on time-domain nuclear magnetic resonance (TD-NMR) enables the estimation of the molecular properties of fatty acid mixtures—kinematic viscosity ( µ ), heating value ( δ ), cetane number (CN), and carbon chain length (CL). In this approach, the 1 H NMR spin–spin relaxation rates R 2 or times T 2 were used to determine these molecular properties. Online monitoring of the µ , δ , CN, and CL of fatty acid mixtures was performed using an online TD-NMR system that had been modified for flowing samples. The presented results show the potential of TD-NMR for online quality control during the production of liquid fuels.
ISSN:	0937-9347 1613-7507
DOI:	10.1007/s00723-018-1046-6