Synthesis of fatty alcohol mixtures from oleochemicals in supercritical fluids

Andersson, Magnus B. O.; King, Jerry W.; Blomberg, Lars G.

doi:10.1039/b003039m

Cited by 31 publications

(19 citation statements)

References 12 publications

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“…Continuous flow hydrogenation of fatty acid methyl esters in scCO 2 and scC 3 H 8 coupled with an enzymatic-catalyzed trans-esterification was performed by Blomberg and co-workers, giving fatty alcohol products directly in a high yield of 96 %. [158] Only a few existing examples of fast hydrogenations demonstrate the possibility of performing the process in a biphasic mixture containing highly pressurized carbon dioxide. Nunes da Ponte and co-workers compared hydrogenation rates of apinene under biphasic conditions using 1 % Pt/C as a reduction catalyst.…”

Section: Continuous-flow Hydrogenation Using Supercritical Solventsmentioning

confidence: 99%

Heterogeneous Catalytic Hydrogenation Reactions in Continuous‐Flow Reactors

2011

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Microreactor technology and continuous flow processing in general are key features in making organic synthesis both more economical and environmentally friendly. Heterogeneous catalytic hydrogenation reactions under continuous flow conditions offer significant benefits compared to batch processes which are related to the unique gas-liquid-solid triphasic reaction conditions present in these transformations. In this review article recent developments in continuous flow heterogeneous catalytic hydrogenation reactions using molecular hydrogen are summarized. Available flow hydrogenation techniques, reactors, commonly used catalysts and examples of synthetic applications with an emphasis on laboratory-scale flow hydrogenation reactions are presented.

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Section: Continuous-flow Hydrogenation Using Supercritical Solventsmentioning

confidence: 99%

Heterogeneous Catalytic Hydrogenation Reactions in Continuous‐Flow Reactors

2011

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“…Detergent range alcohols (C8 -C20 isomers) are used as raw materials for surfactants and lubricants [1]. The production of detergent range alcohols by the Oxo-process results in a product stream that contains large amounts of unreacted alkanes, necessitating further product purification.…”

Section: Introductionmentioning

confidence: 99%

High pressure phase behaviour of the CO2+1-decanol+n-dodecane system

Smith

Schwarz

2015

Fluid Phase Equilibria

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“…High quantitative yields of transesterifications in making methyl esters have permitted application of the lipase reaction in supercritical carbon dioxide as an analytical method for quantifying fat levels in food products, required under new food nutritional labeling guidelines [ 164 ]. A Novozym 435-catalyzed transesterification has been utilized as the initial step in a two-stage synthesis conducted under supercritical fluid conditions to produce fatty alcohols directly from vegetable oils [ 165 ].…”

Section: Enzymes Acting In Lipid Modificationsmentioning

confidence: 99%

Plant Products for Pharmacology: Application of Enzymes in Their Transformations

Zarevúcká

Wimmer

2008

IJMS

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Different plant products have been subjected to detailed investigations due to their increasing importance for improving human health. Plants are sources of many groups of natural products, of which large number of new compounds has already displayed their high impact in human medicine. This review deals with the natural products which may be found dissolved in lipid phase (phytosterols, vitamins etc.). Often subsequent convenient transformation of natural products may further improve the pharmacological properties of new potential medicaments based on natural products. To respect basic principles of sustainable and green procedures, enzymes are often employed as efficient natural catalysts in such plant product transformations. Transformations of lipids and other natural products under the conditions of enzyme catalysis show increasing importance in environmentally safe and sustainable production of pharmacologically important compounds. In this review, attention is focused on lipases, efficient and convenient biocatalysts for the enantio-and regioselective formation / hydrolysis of ester bond in a wide variety of both natural and unnatural substrates, including plant products, eg. plant oils and other natural lipid phase compounds. The application of enzymes for preparation of acylglycerols and transformation of other natural products provides big advantage in comparison with employing of conventional chemical methods: Increased selectivity, higher product purity and quality, energy conservation, elimination of heavy metal catalysts, and sustainability of the employed OPEN ACCESSInt. J. Mol. Sci. 2008, 9 2448 processes, which are catalyzed by enzymes. Two general procedures are used in the transformation of lipid-like natural products: (a) Hydrolysis/alcoholysis of triacylglycerols and (b) esterification of glycerol. The reactions can be performed under conventional conditions or in supercritical fluids/ionic liquids. Enzyme-catalyzed reactions in supercritical fluids combine the advantages of biocatalysts (substrate specificity under mild reaction conditions) and supercritical fluids (high mass-transfer rate, easy separation of reaction products from the solvent, environmental benefits based on excluding organic solvents from the production process).

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Synthesis of fatty alcohol mixtures from oleochemicals in supercritical fluids

Cited by 31 publications

References 12 publications

Heterogeneous Catalytic Hydrogenation Reactions in Continuous‐Flow Reactors

Heterogeneous Catalytic Hydrogenation Reactions in Continuous‐Flow Reactors

High pressure phase behaviour of the CO2+1-decanol+n-dodecane system

Plant Products for Pharmacology: Application of Enzymes in Their Transformations

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