Slug flow as tool for selectivity control in the homogeneously catalysed solvent-free epoxidation of methyl oleate

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dc.contributor.authorGladius, Anoj Winston
dc.contributor.authorVondran, Johanna
dc.contributor.authorRamesh, Yashwanth
dc.contributor.authorSeidensticker, Thomas
dc.contributor.authorAgar, David W.
dc.date.accessioned2022-06-13T13:41:27Z
dc.date.available2022-06-13T13:41:27Z
dc.date.issued2021-10-05
dc.description.abstractCatalytic oxidation of sustainable raw materials like unsaturated fats and oils, or fatty acids and their esters, lead to biobased, high-value products. Starting from technical grade methyl oleate, hydrogen peroxide as a green oxidant produces only water as by-product. A commercially available, cheap water-soluble tungsten catalyst is combined with Aliquat® 336 as a phase-transfer agent in solvent-free reaction conditions. In this study, we first report the transfer of this well-known batch system into continuous mode. The space–time yield is improved from 0.08 kg/L.h in batch to 1.29 kg/L.h in flow mode. The improved mass transfer and reduced back mixing of the biphasic liquid–liquid slug flow allows for selectivity control depending on physical parameters of slug flow namely volumetric phase ratio, volumetric flow rate, and slug length. Even though the product, methyl 9,10-epoxystearate is obtained at a maximum selectivity of only 58% in flow mode, higher space time yield combined with possible reactant recycling in flow mode offers a promising avenue of research. This work analyses the use of slug flow parameters as tools for controlling selectivity towards oxidation products of methyl oleate.en
dc.identifier.urihttp://hdl.handle.net/2003/40954
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-22804
dc.language.isoende
dc.relation.ispartofseriesJournal of flow chemistry;Bd 11. 2021, H. 3, S. 407-427
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectPhase transfer catalysisen
dc.subjectFlow chemistryen
dc.subjectEpoxidationen
dc.subjectPeroxopolyoxotungstatesen
dc.subjectSlug flowen
dc.subject.ddc660
dc.titleSlug flow as tool for selectivity control in the homogeneously catalysed solvent-free epoxidation of methyl oleateen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationJournal of flow chemistry. Band 11. 2021, Heft 3, Seiten 407-427de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1007/s41981-021-00199-6de

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