Selective Enantiomer Separation by Pertraction
Izák, Pavel; Kačírková, Marie; Vychodilová, Hana; Červenková Šťastná, Lucie; Žitka, Jan; Brožová, Libuše; Storch, Jan; Randová, A.; Hovorka, Š.
2014 - anglický
Membrane processes are not commonly used in enantiomer separation due to insufficiency explication of separation mechanisms and because the results of chiral membrane separation are not quite satisfying, especially in comparison with other separation technics, namely HPLC. A new method for selective separation of enantiomers by membrane processes taking advantage of ionic liquids is present. The supported chiral room temperature ionic liquid membrane is used for separation of enantiomers. Volatile enantiomers are separated by pervaporation and non-volatile enantiomers by pertraction.
Klíčová slova:
enantiomer mixture; chiral room temperature ionic liquids; pertraction
Plné texty jsou dostupné na vyžádání prostřednictvím repozitáře Akademie věd.
Selective Enantiomer Separation by Pertraction
Membrane processes are not commonly used in enantiomer separation due to insufficiency explication of separation mechanisms and because the results of chiral membrane separation are not quite ...
Separační procesy v suspenzích mikroorganizmů
Kaštánek, František; Hanika, Jiří
2013 - český
Klíčová slova:
sepatration processes; suspension
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Separační procesy v suspenzích mikroorganizmů
Comprehensive Suite of Coarse-grain Modeling Tools Formulated upon Dissipative Particle Dynamics.
Moore, J.D.; Larentzos, J.P.; Izvekov, S.; Lísal, Martin; Brennan, J.K.
2013 - anglický
Klíčová slova:
dissipative particle dynamics; modeling tools
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Comprehensive Suite of Coarse-grain Modeling Tools Formulated upon Dissipative Particle Dynamics.
Exploration of 9-Bromo[7]helicene Reactivity
Žádný, Jaroslav; Jakubec, Martin; Velíšek, Petr; Sýkora, Jan; Storch, Jan
2012 - anglický
Our new microwave assisted photodehydrocyclisation and completely reviewed synthetic approach for a multi-gram scale production of 9-bromo-[7]helicene led us to explore the reactivity of this compound mainly in Pd-catalysed reactions and to the further functionalization of this molecule. Next to other transformations, palladium catalysed carbon – heteroatom coupling reactions provide a large portfolio of racemic helicenes bearing different functional groups in good to excellent yields. Many of the reactions are performed in the microwave initiator saving reaction time to a minimum comparing with conventional and known synthetic methods. Such prepared compounds can undergo further synthetic reactions or can be used on a field of molecular electronics, surface chemistry or in other applications. The separation of racemic mixtures is under running in our lab. Optically pure compounds of such a type can open new possibilities in their use.
Klíčová slova:
helicene; palladium cross-coupling; microwave synthesis
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Exploration of 9-Bromo[7]helicene Reactivity
Our new microwave assisted photodehydrocyclisation and completely reviewed synthetic approach for a multi-gram scale production of 9-bromo-[7]helicene led us to explore the reactivity of this compound ...
Preparation of Porphyrin Based HPLC Columns for the Separation of Fullerenes
Slavíček, J.; Šabata, Stanislav; Lang, Kamil; Lhoták, P.
2012 - anglický
Klíčová slova:
fullerens; porphyrin; separation
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Preparation of Porphyrin Based HPLC Columns for the Separation of Fullerenes
Příprava stacionárních fází pro HPLC na bázi porfyrinů a calix[4]aren-porfyrinových konjugátů využitelných pro separaci-detekci fullerenů
Slavíček, J.; Šabata, Stanislav; Lang, Kamil; Lhoták, P.
2012 - český
Klíčová slova:
fullerens; porphyrin; separation
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Příprava stacionárních fází pro HPLC na bázi porfyrinů a calix[4]aren-porfyrinových konjugátů využitelných pro separaci-detekci fullerenů
Amidation of Oxidized Cellulose and Carboxymethyl Cellulose
Taubner, C.; Synytsya, A.; Sobek, Jiří; Čopíková, J.
2012 - anglický
This paper deals with the preparation of amide derivatives of oxidized cellulose and carboxymethyl cellulose. The article compared the degree of substitution of products and purity of products.
Klíčová slova:
amidation; oxidized cellulose; carboxymethyl cellulose
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Amidation of Oxidized Cellulose and Carboxymethyl Cellulose
This paper deals with the preparation of amide derivatives of oxidized cellulose and carboxymethyl cellulose. The article compared the degree of substitution of products and purity of products.
Příprava amidových derivátů oxidované celulosy a karboxymethylcelulosy
Taubner, T.; Synytsya, A.; Sobek, Jiří; Čopíková, J.
2012 - český
Klíčová slova:
oxidized cellulose; amide derivates; carboxymethylcellulose
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Příprava amidových derivátů oxidované celulosy a karboxymethylcelulosy
Thin Functional Films of TiO2 Nanoparticles
Morozová, Magdalena; Klusoň, Petr; Hejda, S.; Kment, Štěpán; Šolcová, Olga
2011 - anglický
Magnetron Sputtering and the Modulated Hollow Cathode Plasma Jet Sputtering. As chemical method the sol-gel process carried out in the templating environment as dip-coating and piezo-jet printing was employed. The produced films differed in many structural characteristics and also in their photoelectrochemical behaviour, as the primary sought function. The produced layers were described by means of atomic force microscopy, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy, Raman spectroscopy, ellipsometry and profilometry. Then the films were used as electrodes in photoelectrochemical experiments.
Klíčová slova:
spectroscopy; films; nanoparticles
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Thin Functional Films of TiO2 Nanoparticles
Magnetron Sputtering and the Modulated Hollow Cathode Plasma Jet Sputtering. As chemical method the sol-gel process carried out in the templating environment as dip-coating and piezo-jet printing was ...
Titania Supported Co-Mn-Al Catalysts in Total Oxidation of Ethanol
Ludvíková, Jana; Jirátová, Květa; Klempa, Jan
2011 - anglický
In pelletized mixed oxide catalysts prepared by calcination of coprecipitated precursors, a considerable part of the pellets is not utilized in case of very fast catalytic reaction, due to the effect of internal and external diffusion. Therefore, deposition of thin active layer on a supporting material is advantageous. In this contribution, the effect of the support (titania grains and extrudates) on properties and catalytic activity in VOC oxidation of both catalyst geometric forms were examined.
Klíčová slova:
mixed oxide catalysts; voc oxidation; titania
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Titania Supported Co-Mn-Al Catalysts in Total Oxidation of Ethanol
In pelletized mixed oxide catalysts prepared by calcination of coprecipitated precursors, a considerable part of the pellets is not utilized in case of very fast catalytic reaction, due to the effect ...
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