منابع مشابه
Separation of pharmaceutical products with reverse micelles
Reverse micelle extraction has received considerable attention in recent years due to its ability to selectively solubilise solutes from an aqueous phase and to maintain their biological activities. This paper presents the results from studies on extraction of penicillin G from aqueous solution (forward extraction) and from reverse micelles to a new aqueous solution (backward extraction), by em...
متن کاملEnzyme reactions in reverse micelles
Enzyme reactions are important not only in life processes but also for the commercial production of various chemicals and foods. Many enzyme reactions of practical interest involve water-insoluble substrates and/or products. To improve the efficiencies of such reactions, one can exploit the system of reverse micelles to immobilize the enzymes and serve as a microheterogeneous reaction medium. E...
متن کاملPhotophysical Processes of Ethidium Bromide in Micelles and Reverse Micelles
Photophysical processes of ethidium bromide (EB) in homogeneous solutions, micelles, and reverse micelles have been investigated. In acetonitrile, the fluorescence intensity and lifetime of EB are 6.3 ( 0.3 times those in water and 1.25 ( 0.1 times those in acetone. This is attributed to the weaker hydrogen-bond acceptor property of acetonitrile, compared to water and acetone. Addition of water...
متن کاملDynamics of water confined within reverse micelles.
We report structural and dynamical properties of water confined within reverse micelles (RMs) ranging in size from R = 10 A to R = 23 A as determined from molecular dynamics simulations. The low-frequency infrared spectra have been calculated using linear response theory and depend linearly on the fraction of bulklike water within the RMs. Furthermore, these spectra show nearly isosbestic behav...
متن کاملStructure of AOT reverse micelles under shear.
Reverse micelles in the AOT/water/isooctane system, at various water contents (W(0)), were studied using rheometry and small angle X-ray scattering (SAXS) experiments under static conditions and under shear. The SAXS analysis confirmed the spherical shape of the micelles at low water content and revealed a transition into elongated micelles at higher water content. A population of spherical mic...
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ژورنال
عنوان ژورنال: Industrial & Engineering Chemistry Research
سال: 1993
ISSN: 0888-5885,1520-5045
DOI: 10.1021/ie00013a017