Number of found documents: 1530
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Mikroreaktorová příprava chemických specialit stereoselektivní hydrogenací v přítomnosti iontových kapalin.
Hejda, Stanislav; Stavárek, Petr; Klusoň, Petr; Vychodilová, Hana; Vlček, Dalibor; Bendová, Magdalena
2018 - Czech
Keywords: microreaktor; ionic liquid; hydrogenation Available at various institutes of the ASCR
Mikroreaktorová příprava chemických specialit stereoselektivní hydrogenací v přítomnosti iontových kapalin.

Hejda, Stanislav; Stavárek, Petr; Klusoň, Petr; Vychodilová, Hana; Vlček, Dalibor; Bendová, Magdalena
Ústav chemických procesů, 2018

Understanding the Principles of Diastereomeric Complexes of Chiral Urea Derivatives.
Cuřínová, Petra; Jakubec, Martin; Storch, Jan; Holakovský, R.
2017 - English
The main target of this work based on the NMR studies is to elucidate the structural principles which are responsible for the action of the chiral selectors at hand, and thus to be able to predict the new promising structures useful as NMR shift reagents. Keywords: NMR solvating agent; chiral recognition; diastereomeri complex Available in a digital repository NRGL
Understanding the Principles of Diastereomeric Complexes of Chiral Urea Derivatives.

The main target of this work based on the NMR studies is to elucidate the structural principles which are responsible for the action of the chiral selectors at hand, and thus to be able to predict the ...

Cuřínová, Petra; Jakubec, Martin; Storch, Jan; Holakovský, R.
Ústav chemických procesů, 2017

Usage of GP750 Gasifier for Combined Heat and Power Production.
Brynda, J.; Skoblia, S.; Pohořelý, Michael; Beňo, Z.; Moško, Jaroslav
2017 - English
Contribution presents experiences with long-therm operation of GP750 gasifiers in the combined heat and power plant Kozomín. Keywords: gasification; biomass; combined heat and power production Available in a digital repository NRGL
Usage of GP750 Gasifier for Combined Heat and Power Production.

Contribution presents experiences with long-therm operation of GP750 gasifiers in the combined heat and power plant Kozomín.

Brynda, J.; Skoblia, S.; Pohořelý, Michael; Beňo, Z.; Moško, Jaroslav
Ústav chemických procesů, 2017

Changes in Sub-micron Number Size Distributions at Czech Rural and Urban Background Stations in the Last Ten Years.
Zíková, Naděžda; Ondráček, Jakub; Wagner, Zdeněk; Ždímal, Vladimír
2017 - English
In this work, not only total concentrations are evaluated, but also particle number size distributions (PNSD) are compared in the last decade at the two stations, and possible explanations for the change in concentrations and PNSD changes are looked for. Additionally, also the change in the frequency and strength of the NPF events is evaluated.\n Keywords: SMPS; long-term measurement; rural background Available in a digital repository NRGL
Changes in Sub-micron Number Size Distributions at Czech Rural and Urban Background Stations in the Last Ten Years.

In this work, not only total concentrations are evaluated, but also particle number size distributions (PNSD) are compared in the last decade at the two stations, and possible explanations for the ...

Zíková, Naděžda; Ondráček, Jakub; Wagner, Zdeněk; Ždímal, Vladimír
Ústav chemických procesů, 2017

Use of Water-Modified Supercritical Carbon Dioxide for Direct Preparation of CrystallineMonolithic TiO2 Aerogels.
Cerhová, Marie
2017 - English
We studied a combination of supercritical CO2 and water for the preparation of crystalline and pure nanostructured TiO2 without any thermal processing. The effect of temperature (40–100 °C) and pressure (10–30 MPa) on the purity, structural and textural properties was investigated.\n\n\n Keywords: carbon dioxide; TiO2; pressure Available in a digital repository NRGL
Use of Water-Modified Supercritical Carbon Dioxide for Direct Preparation of CrystallineMonolithic TiO2 Aerogels.

We studied a combination of supercritical CO2 and water for the preparation of crystalline and pure nanostructured TiO2 without any thermal processing. The effect of temperature (40–100 °C) and ...

Cerhová, Marie
Ústav chemických procesů, 2017

Helicene-based Thioureas.
Jakubec, Martin
2017 - English
The main goal of this work was to introduce the helicene moiety into the structure of bis(aryl)thiourea, to prepare a new type of a helicene-based organocatalyst. Several aryl(helicenyl)thioureas were synthesized so far. Their ability to form hydrogen-bond complexes with various types of substrates was verified using NMR and the activity of the catalysts is currently being explored.\n Keywords: helicene moiety; ability; nmr Available in a digital repository NRGL
Helicene-based Thioureas.

The main goal of this work was to introduce the helicene moiety into the structure of bis(aryl)thiourea, to prepare a new type of a helicene-based organocatalyst. Several aryl(helicenyl)thioureas were ...

Jakubec, Martin
Ústav chemických procesů, 2017

High-Temperature Desulfurization of a Producer Gas by La- and Ce-based Oxides.
Brynda, Jiří
2017 - English
Keywords: desulfurization; oxide fuel cells; sorbents Available in a digital repository NRGL
High-Temperature Desulfurization of a Producer Gas by La- and Ce-based Oxides.

Brynda, Jiří
Ústav chemických procesů, 2017

Electrocoagulation Scaling-Up for Removal of Toxic Metals, Namely Cr6+ and Ni2+.
Krystyník, Pavel; Klusoň, Petr; Mašín, P.; Kroužek, J.
2017 - English
Presented cotribution deals with application of electrocoagulation process for removal of Cr6+ and other toxic metals, namely Ni2+, Zn2+, Cu2+ and Mn2+ from contaminated groundwater on the site of former galvanization plant. The industrial effluent has pH ranging from 4.2 to 4.8; RAS (dissolved inorganic salts) is 2540 mg/L and conductivity 488 mS/m. Keywords: experiments; electrocoagulation process; electrode Available in a digital repository NRGL
Electrocoagulation Scaling-Up for Removal of Toxic Metals, Namely Cr6+ and Ni2+.

Presented cotribution deals with application of electrocoagulation process for removal of Cr6+ and other toxic metals, namely Ni2+, Zn2+, Cu2+ and Mn2+ from contaminated groundwater on the site of ...

Krystyník, Pavel; Klusoň, Petr; Mašín, P.; Kroužek, J.
Ústav chemických procesů, 2017

Nanoparticle Generation for Follow-Up Exposure Studies by Oxidation of Copper Acetylacetonate.
Moravec, Pavel; Schwarz, Jaroslav; Vodička, Petr; Švehla, Jaroslav; Kupčík, Jaroslav
2017 - English
The exposure to nanoparticles (NPs) represents a severe problem to human health, because they are becoming more widely used and their number of applications continually increases. Particles containing copper are emitted from smelters, iron foundries, power stations and municipal incinerators (WHO, 1998), as well as from brake linings during braking, Kukutschova et al. (2011). Copper and copper oxide NPs are frequently used as catalysts, heat transfer fluids in machine tools (Kim et al., 2011), inks, anode material in lithium-ion batteries (Guo et al., 2002) and many others. Even though CuO NPs were found highly toxic, Karlsson et al. (2008) and it is likely that NPs enter human body via respiratory tract, the inhalation exposure experiments of CuO NPs with laboratory animals are still rather rare (Pettibone et al., 2008 and Lebedova et al., 2016). The exposure chamber for long lasting inhalation experiments was constructed at the Institute of Analytical Chemistry of the CAS (Večeřa et al., 2011) and some methods of NPs generation for these experiments were already tested in our laboratory (Moravec et al., 2015 and Moravec et al., 2016a). The generation of Cu/Cu2O NPs by thermal decomposition of copper acetylacetonate (CuAA) was reported by Moravec et al. (2016b) and here we present the results of long lasting generation of NPs by oxidation of CuAA. Keywords: exposure studies; nanoparticle generation; nanoparticle characterization Available in a digital repository NRGL
Nanoparticle Generation for Follow-Up Exposure Studies by Oxidation of Copper Acetylacetonate.

The exposure to nanoparticles (NPs) represents a severe problem to human health, because they are becoming more widely used and their number of applications continually increases. Particles containing ...

Moravec, Pavel; Schwarz, Jaroslav; Vodička, Petr; Švehla, Jaroslav; Kupčík, Jaroslav
Ústav chemických procesů, 2017

Nástin možného vývoje a inovací potravin pro budoucí období v horizontu příštích dekád.
Kaštánek, František; Kaštánek, P.; Šolcová, Olga
2017 - English
Keywords: food; future; nutrition of humanity Available in a digital repository NRGL
Nástin možného vývoje a inovací potravin pro budoucí období v horizontu příštích dekád.

Kaštánek, František; Kaštánek, P.; Šolcová, Olga
Ústav chemických procesů, 2017

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