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dc.contributor.author
Killner, M. H. M.
dc.contributor.author
Garro Linck, Yamila
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Danieli, Ernesto Pablo
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Rohwedder, J. J. R.
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Blümich, B.
dc.date.available
2018-03-05T19:14:47Z
dc.date.issued
2015-01
dc.identifier.citation
Killner, M. H. M.; Garro Linck, Yamila; Danieli, Ernesto Pablo; Rohwedder, J. J. R.; Blümich, B.; Compact NMR spectroscopy for real-time monitoring of a biodiesel production; Elsevier; Fuel; 139; 1-2015; 240-247
dc.identifier.issn
0016-2361
dc.identifier.uri
http://hdl.handle.net/11336/37852
dc.description.abstract
The use of biodiesel shows innumerous advantages compared to fossil fuels, since biodiesel is a biodegradable and non-toxic fuel. Nowadays, most of the biodiesel commercialized in the world is produced by the transesterification reaction of vegetable oils with methanol and basic catalysis. Understanding the reaction kinetics and controlling its optimum progress for improving the quality of the final product and to reduce production costs is of paramount importance. The present work explores compact 1H NMR spectroscopy to follow the course of the transesterification reaction in real time. For this purpose the magnet is integrated into a flow setup which allows one to transport the neat solution from the reactor into the measurement zone and back again into the reactor. A multivariate calibration model applying Partial Least Squares regression was built to analyze the measured data and to obtain information about the biodiesel conversion ratio with errors on the order of 1%. This information is used in combination with a Lorentzian deconvolution of the spectra to estimate the relative concentrations of methanol present in the ester-rich phase in comparison with the one in the glycerol phase, the second medium involved in the reaction mixture. Finally, we demonstrate that the conversion ratio can also be monitored by measuring the chemical shift of the hydroxylic protons of methanol and glycerol present in the ester-rich phase. These results demonstrate that a compact NMR spectrometer can provide spectra with good quality and time resolution suitable for real time quality control of biodiesel production.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Biodiesel
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Chemometrics
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Low-Field Nmr
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Reaction Monitoring
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Transesterification Reaction
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Compact NMR spectroscopy for real-time monitoring of a biodiesel production
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T14:18:02Z
dc.journal.volume
139
dc.journal.pagination
240-247
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Killner, M. H. M.. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Garro Linck, Yamila. Rwth Aachen University; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Danieli, Ernesto Pablo. Rwth Aachen University; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Rohwedder, J. J. R.. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Blümich, B.. Rwth Aachen University; Alemania
dc.journal.title
Fuel
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.fuel.2014.08.050
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S001623611400828X
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