Global ETD Search
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Showing 1 to 12 of 12 for “"biphasic system"”.
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Nanoemulsion-like Polymersomes for Nanoreactors
… catalyst recovery The issues in the nanoreactor system and the mechanism of the phase transfer in the biphasic system are discussed. First, a new reversible reaction process with the thermo-responsive shuttling of the IL-filled polymersomes between the phases was designed. In nanoreactor …
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An Examination of γ-valerolactone Ring Opening and Decarboxylation in Multiphase System and Over Various Solid Acid Catalysts
… liquid and gas phases over various catalytic systems aiming at improving the efficiency in selective preparation of target product. An initial attempt was made in a biphasic reactor to improve the yield to PEA catalyzed by mineral acids (H2SO4). A wide range of solvents was tested for their …
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An Examination Of Γ-valerolactone Ring Opening And Decarboxylation In Multiphase System And Over Various Solid Acid Catalysts
… liquid and gas phases over various catalytic systems aiming at improving the efficiency in selective preparation of target product. An initial attempt was made in a biphasic reactor to improve the yield to PEA catalyzed by mineral acids (H2SO4). A wide range of solvents was tested for their …
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Investigation of Dibenzothiophene Removal from I Organic Phase: Enzymatic Approach vs. Ionic Liquids
… and successfully demonstrated using a biphasic system involving dibenzothiophene (DBT) hexane solution and 1-Butyl- 3-methyimidazolium tetraflouroborate, which forms the heavier layer in the system. The effects of different factors that may influence the extraction process with the …
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A Microcosm-Based Investigation into Oxidized Nitrogen Removal in the Hypolimnetic Waters of the Occoquan Reservoir of Northern Virginia
… interactions. The microcosm system developed was a biphasic system, consisting of a single continuous stirred tank reactor (CSTR), or a series of CSTRs containing representative sediment and water samples from the reservoir. The system was configured to simulate the bottom …
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Effective interactions arising from resource limitations in gene transcription networks/
… can behave like an effective repressor or a biphasic system, and that a repression cascade can become bistable. The results presented in this thesis may be helpful to mitigate the undesirable effects arising from resource limitations in the future.
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Novel Functional Graphene and its Thermodynamic Interfacial Localization in Biphasic Polyolefin Systems for Advanced Lightweight Applications
… (PE) and Polypropylene (PP), in a macro-micro biphasic polyolefin system, with PE representing the macro phase. An alternative and inexpensive Graphene Oxide (GO) modification is performed for synthesizing a novel functional graphene. Then, a thermodynamically driven mixing mechanism of the …
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Diversity oriented, computer guided catalyst design: Application of chemoinformatics to catalysis
… of ammonium ions at the interfacial region of a biphasic system, allowing for its use as a general descriptor for transport-limiting PTC rate approximations
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Liquid-liquid extraction of carotenoids from palm oil (Elaeis guineensis)
… for the solvent mixture and the tendency of biphasic system formation. The total carotenoid extraction increased with increasing temperature, with 50 °C having the highest extraction, followed by 45 and 40 °C. Equilibrium data for a system composed of palm oil + anhydrous ethanol + DMSO at …
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Engineering novel tandem reactions using organometallic catalysts and (metallo)enzymes
… tandem reactions between these two catalytic systems, with a par-ticular interest on combining cytochrome P450s and enoate reductases with organometallic cata-lysts. On the one hand, considerable efforts in transition-metal catalysis have culminated in prac-tical and efficient transformations …
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Engineering novel tandem reactions using organometallic catalysts and metalloenzymes
… two catalysts can effectively work together in a biphasic system, for a successive isomerization and epoxidation of alkenes and short olefinic acids. However, we observed that under the reaction conditions, the trans- to cis- isomerization rate of olefins is too slow. Lastly, we also found that …
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NEW BIOCATALYTIC PLATFORMS FOR THE SYNTHESIS OF HIGHLY VALUABLE COMPOUNDS THROUGH INTENSIFIED BIOPROCESSES
… this thesis focused on the use of a whole-cell system to perform biooxidations of benzyl alcohols mediated by endogenous dehydrogenases of acetic acid bacteria (AAB), getting access to the corresponding carboxylic acids. As key study, I studied the selective de-symmetrisation of …