Abstract
The ethers produced through the etherification reaction of glycerol with ethanol or t-butanol are used as oxygenated fuel additives, intermediates in the pharmaceutical industry, and non-ionic surfactants. However, the identification of these ethers has not been accurately done, because only some mass spectra of these compounds are available in the libraries. Moreover, there is a lack of discussion on their identification in the literature. In this work, a detailed identification of all ethers produced in the etherification of glycerol with ethanol or t-butanol was performed considering the mass spectra of isolated products and the comparison of the retention times. The elution order of the products was: tri-alkyl, 1,3-dialkyl, 2,3-dialkyl, 3-monoalkyl and 2-monoalkyl. In all mass spectra of the ethyl ethers, the base peak was m/z 61, while in the case of t-butyl ethers it was m/z 57.
Highlights
The use of biomass has been largely studied due to environmental issues
One possibility to add value to glycerol is through the etherification reaction
In this work, all ethers produced in the etherification reaction of glycerol and ethanol or t-butanol were identified considering the mass spectra of products isolated by gas chromatography and identified by mass spectrometry, and the comparison of the retention time of known compounds
Summary
The use of biomass has been largely studied due to environmental issues. Platform molecules, that is, building blocks for several other chemicals are obtained from biomass by chemical and/or enzymatic processes. In this work, all ethers produced in the etherification reaction of glycerol and ethanol or t-butanol were identified considering the mass spectra of products isolated by gas chromatography and identified by mass spectrometry, and the comparison of the retention time (tR) of known compounds.
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