Number of found documents: 872
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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 - English
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. Keywords: enantiomer mixture; chiral room temperature ionic liquids; pertraction Available on request at various institutes of the ASCR
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 ...

Izák, Pavel; Kačírková, Marie; Vychodilová, Hana; Červenková Šťastná, Lucie; Žitka, Jan; Brožová, Libuše; Storch, Jan; Randová, A.; Hovorka, Š.
Ústav chemických procesů, 2014

Separační procesy v suspenzích mikroorganizmů
Kaštánek, František; Hanika, Jiří
2013 - Czech
Keywords: sepatration processes; suspension Available at various institutes of the ASCR
Separační procesy v suspenzích mikroorganizmů

Kaštánek, František; Hanika, Jiří
Ústav chemických procesů, 2013

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 - English
Keywords: dissipative particle dynamics; modeling tools Available at various institutes of the ASCR
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.
Ústav chemických procesů, 2013

Exploration of 9-Bromo[7]helicene Reactivity
Žádný, Jaroslav; Jakubec, Martin; Velíšek, Petr; Sýkora, Jan; Storch, Jan
2012 - English
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. Keywords: helicene; palladium cross-coupling; microwave synthesis Available at various institutes of the ASCR
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 ...

Žádný, Jaroslav; Jakubec, Martin; Velíšek, Petr; Sýkora, Jan; Storch, Jan
Ústav chemických procesů, 2012

Preparation of Porphyrin Based HPLC Columns for the Separation of Fullerenes
Slavíček, J.; Šabata, Stanislav; Lang, Kamil; Lhoták, P.
2012 - English
Keywords: fullerens; porphyrin; separation Available at various institutes of the ASCR
Preparation of Porphyrin Based HPLC Columns for the Separation of Fullerenes

Slavíček, J.; Šabata, Stanislav; Lang, Kamil; Lhoták, P.
Ústav chemických procesů, 2012

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 - Czech
Keywords: fullerens; porphyrin; separation Available at various institutes of the ASCR
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.
Ústav chemických procesů, 2012

Amidation of Oxidized Cellulose and Carboxymethyl Cellulose
Taubner, C.; Synytsya, A.; Sobek, Jiří; Čopíková, J.
2012 - English
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. Keywords: amidation; oxidized cellulose; carboxymethyl cellulose Available at various institutes of the ASCR
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.

Taubner, C.; Synytsya, A.; Sobek, Jiří; Čopíková, J.
Ústav chemických procesů, 2012

Příprava amidových derivátů oxidované celulosy a karboxymethylcelulosy
Taubner, T.; Synytsya, A.; Sobek, Jiří; Čopíková, J.
2012 - Czech
Keywords: oxidized cellulose; amide derivates; carboxymethylcellulose Available at various institutes of the ASCR
Příprava amidových derivátů oxidované celulosy a karboxymethylcelulosy

Taubner, T.; Synytsya, A.; Sobek, Jiří; Čopíková, J.
Ústav chemických procesů, 2012

Thin Functional Films of TiO2 Nanoparticles
Morozová, Magdalena; Klusoň, Petr; Hejda, S.; Kment, Štěpán; Šolcová, Olga
2011 - English
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. Keywords: spectroscopy; films; nanoparticles Available at various institutes of the ASCR
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 ...

Morozová, Magdalena; Klusoň, Petr; Hejda, S.; Kment, Štěpán; Šolcová, Olga
Ústav chemických procesů, 2011

Titania Supported Co-Mn-Al Catalysts in Total Oxidation of Ethanol
Ludvíková, Jana; Jirátová, Květa; Klempa, Jan
2011 - English
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. Keywords: mixed oxide catalysts; voc oxidation; titania Available at various institutes of the ASCR
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 ...

Ludvíková, Jana; Jirátová, Květa; Klempa, Jan
Ústav chemických procesů, 2011

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