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Showing 1 to 15 of 15 for “"biphasic systems"”.
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Model-based experimental analysis of enzyme kinetics in aqueous-organic biphasic systems
… transfer, and diffusion were studied in separate systems. Each system was individually investigated using the model-based experimental analysis (MEXA) approach including a priori simulations, sensitivity analysis, and optimal experimental design. This supports not only the development of …
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Stabilitäten der Benzaldehydlyase aus Pseudomonas fluorescens und der Carbonylreduktase aus Candida parapsilosis in wässrig-organischen Zweiphasensystemen
… can be achieved in aqueous reaction systems and thus the use of alternative reaction media is desirable. Especially the use of aqueous-organic biphasic systems is promising, since the extraction of products and the spatial separation from the enzyme facilitate efficient processes. …
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Charakterisierung und rationale Immobilisierung von Lipasen in biphasischen Reaktionssystemen
… aspects on optimal pH and enzyme behaviour in biphasic reaction media are still not well-known. Such information is highly desired for the rational process design. Therefore, the influence of the pH in lipase-based esterifications in biphasic media was studied. For Candida rugosa and …
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Determination of descriptors by liquid-liquid partition and chromatographic methods
… were determined for several totally organic biphasic systems using formamide, propylene carbonate, ethylene glycol or dimethyl sulfoxide as the base solvent and n-heptane, 1,2-dichloroethane, 1-octanol or isopentyl ether as the counter solvent. These partition coefficient databases are …
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Oscillating Dispersed-Phase Co-Flow Microfluidic Droplet Generation: Effects on Jet Length and Droplet Size
… the aforementioned limitations of co-flow systems. Nozzle oscillation effect was studied in both dripping and jetting regimes to generate repeatable patterns of multi-size monodisperse droplets and jet length reduction in different biphasic systems, respectively.
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(i)chromatographic Methods For Solute Descriptor Determinations (ii)ruthenium Substrate-Catalyzed Growth Of Nickel Nitride Thin Films By Atomic Layer Deposition
… were constructed for totally organic biphasic partition systems of different polarity containing ethanolamine as the base solvent. The models demonstrate high accuracy and are of good statistical quality. The descriptor space for the determination of the hydrogen bond acidity …
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Methods for the analysis of thermomagnetic phase transitions of magnetocaloric materials
… Curie temperature, critical exponents (even in biphasic systems), order of the phase transition and critical composition for which rst order phase transition becomes second order. These analyses were performed in well know materials such as Gd, Gd5Si2Ge2, La(Fe,Si)13, Ni-Mn-In Heusler alloys and …
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Increasing the Stability and Turnover Number of a Highly Active Iron Catalyst for the Asymmetric Transfer Hydrogenation of Ketones
… limitations caused by the formation of a biphasic reaction mixture. The maximum TON was 199, which rivals platinoid metal catalysts in similar biphasic systems. Finally, a variant of the iron catalyst was successfully covalently bonded to polystyrene, silica gel, and polyethylene glycol …
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Bijels For Continuous Reactive Separations
… make the separation of the product challenging. Biphasic systems comprising two immiscible phases can host both polar and apolar species and at the same time allowing separation of molecules of different polarity by simple phase partitioning. Two forms of biphasic reactive separation systems have …
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Hydrierung im invertierten Zweiphasensystem scCO 2/H 2 O
Catalysis using an inverted scCO2/H2O biphasic system where the catalyst is immobilized in scCO2 as stationary phase and the substrate and product are contained in the aqueous phase, offers an interesting alternative to classical biphasic systems and enables the conversion of polar substrates, …
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A Study of Polymer-Small Molecule Interactions for Solid-Liquid Two Phase Partitioning Bioreactors With Emphasis on the Bioproduction of 2-Phenylethanol
Biphasic systems have been studied for in situ product removal (ISPR), and have shown improvements in bioreactor performance. With immiscible solvents, concerns associated with solvent biocompatibility, bioavailability and operation have been identified. One alternative is a solid-liquid system in …
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Applications of room temperature ionic liquids in interfacial polymerization
… data. Physical properties of ILs relevant to the biphasic systems were also studied in this work. The interfacial tensions between organic solvents and ILs were found to decrease with ascending alkyl chain length attached to the imidazolium cations. In general, the interfacial tensions between ILs …
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A computational approach to solvent selection for biphasic reaction systems
Biphasic reaction systems with a reactive and a non-reactive phase are widespread in technical applications. The non-reactive phase serves as a reservoir of dissolved substrates at high concentrations and allows for the extraction of the product during the reaction. The proper choice of the phase …